        !    ""#  $%$$&' (  ) (   !*'+,-,.$%$,-,.  (/  ,,  0122   ,,   3 ,  "  4    (      5 $%$,-,.  ! ,,  6  = 6!78,-,.%$8,-,.  !"# 9:;4 " (:;4 " <:;4 " =>??:;4 " @ 3 :; ( −  9 3 :; ? − 9 3 :; " <4 −  9 3 :; A 94 −  3 :; ( −   3 :; B −  3 :; A 94 −  3 :; " # C4 − ,9 3 :; # C4 −  "3 :; B − D "3 :; A 94 −  A ( (44 − :;9 3 >< A3 :; ( −  < A3 :; A 94 − < A3 :; " # C4 − => A3 :; " # C4 − E@ "3 :; " # C4 −  3 # 9 :; " # C4 − (- "3 :; " # C4 −  "3 :; " A C4 − => "3 :; " A (4 −  D "3 :; " C − (- "3 :; " A (4 − (?:;4 " (-:;4 " 9 3 :; F 4  < A3 :; F 4 ( "3 :; A # 4 − => A3 :; A # 4 −  "3 :; " A (4 − C?:;4 " 3 # 9 :; A (4 − $%&'( )*+!,-# 94 ? 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L# ;J >H A "# )%[t8T>> 7TQXMQ5Q,-+P+MQ'0WQ > [s L5vQv, ;Qv5v, >,v5vQ 5v,vQ "# *%(-S>-a7b; 5-'Xa;8-a7ND1J L15 " "5 " "Q H A5 " AQ A >15 " "5 " "Q H A5 " #Q H ;15 " "5 " "Q H A, J 15 " "5 " "Q H A5 " AQ H #5 1 "# +%(-S>-a7b; 5-'Xa;8-a7 AK 1K  L15 " "5 " "Q H A5 " AQ H A, 1 >15 " "5 " "Q H A5 " A, 1 AQ H ;15 " "5 " "Q H A5 " AQ H #5 1 15 " "5 " "Q H A5 " AQ H #5 " "# ,%9-a7b "I ] N-S>15 " "5 " "Q H A5 " AQ 1 )\Xb]N5\W; L1AQ ;1AQ:;1# >1A:;1#Q 1A:;1AQ "# -%+b["2 X:;N-S>;15 " "5 " "Q H A5 " AQ H #5 " )9b'N; L "2 12 9> ; AK 1K   > A1 1J    #2 "2 ( "# $.%(e-S>-a7b8-a7 \ L15 " "5 " "Q H A5 "  >15 " "5 " "Q H A5 " AQ J ;15 " "5 " "Q H A5 " AQ H 15 " "5 " "Q H A5 " AQ # "# $$%(e-S>-a7b8-a7Q L15 " "5 " "Q H A5 "  >15 " "5 " "Q H A5 " AQ A ;15 " "5 " "Q H 15 " "5 " "Q H A5 1 "# $&%9-a7b8-a7N>-P;A, H )h5>8-a7b; L"# ;"J >"H "I "# $'%9-a7b8-a7N>-P;AQ 1 )9-a7b8-a7qN>- P;AQ A )CQ  8]qO; L1A:;1J ;1":;1# >1A:;1# 1":;1J "# $(%9-a7b8-a7wN-S>Wx&#5 1 )Cd--a7b; L1K ;"# >"K @'m-'x "# $)%+-a7b]Nh5>> &TQXMQ5;H:;h5>> MQ ; P;H)( @W]-+:m-a7 Te; 5-'Xag L40DG ;^--yD1H()= DK ( D1I "# $*%9-a7bND"J-+ \-a7; L5 ;Q >, E "# $+%?  " ] − N L5Qz5>" ;5>z5" >5>z5Q" 5>z5Q35" "# $,%9-a7b8-a7]ND"2)CQ8 ] "3 ; L1G ;"2 >"" "J "# $-%9-a7b8-a7]ND"2)C>8 ] "3 ; J  L1G ;"2 >"" "J "# &.%9-a7b8-a7]NDI)C>8  A ] − ; LK ;12 ># H "# &$%? q AF N1G>)9-a7b8-a7qN L1J> ;1G> >"1> 1"> "# &&%?  " # C4 − N[5\Q  :;>> O; L"#Q"#> ;#GQ#G> >#GQJ2> "#Q"H> "# &'%( i "3 N-S>> &QXMQ ;P;"Q H ){a-S>> 8 -a7bi; L15 " "5 " "Q J ;15 " "5 " "Q H A5 " >15 " "5 " "Q H A5 " AQ 1 15 " "5 " "Q H A5 1 "# &(%( i 3 N-S>MQ ;P;AQ H )(-S>> 'Oa'88i; L15 " "5 " "Q H A5 " AQ H ;15 " "5 " "Q H A5 " AQ J >15 " "5 " "Q H A5 " AQ H A, 1 15 " "5 " "Q H A5 " AQ H #5 1 "# &)%<  "F N-S>MQ ;P;AQ H )(-S>> 'Oa'88; L15 " "5 " "Q H A5 " AQ J ;15 " "5 " "Q H A5 " AQ H >15 " "5 " "Q H A5 " AQ # 15 " "5 " "Q H A5 " AQ H #5 " "# &*%( ] A3 :; q "F 'm-N-S>> ;15 " "5 " "Q H )$d-8T-a7b ]qO; L<:;4 ;:;4 ><:;= :;= "# &+%6Ra*T ] 3 q F :;-a7bD'm-N-S>> 15 " "5 " "Q H ; L 3  ( − < ;^ 3  = − 9> >9 3  ( − < 9 3  = − 9> "# &,%( @W=>ND"H)(-S>> 8=>; L15 " "5 " "Q H A5 " AQ H #5 " A, H >15 " "5 " "Q H A5 " AQ H A, H #5 " ;15 " "5 " "Q H A5 " AQ H A, J 15 " "5 " "Q H A5 " AQ H A, # "# &-%( @W=>ND"H)(-S>> 8 => "3 ; L15 " "5 " "Q H A5 " AQ H #5 " >15 " "5 " "Q H A5 " AQ H A, # #5 " ;15 " "5 " "Q H A5 " AQ H A, H 15 " "5 " "Q H A5 " AQ H A, J "# '.%( @W=>ND"H)(-S>> 8 => A3 ; L15 " "5 " "Q H A5 " AQ H #5 " >15 " "5 " "Q H A5 " AQ H A, H ;15 " "5 " "Q H A5 " AQ H A, J 15 " "5 " "Q H A5 " AQ H A, # #5 " "# '$%( @W(-ND"K)(-S>> 8(-; L15 " "5 " "Q H A5 " AQ H A, K #5 " >15 " "5 " "Q H A5 " AQ H #5 1 A, 12 ;15 " "5 " "Q H A5 " AQ H #5 " A, K 15 " "5 " "Q H A5 " AQ H A, 12 #5 1 "# '&%(-x>> ; 5-'Xa;8 (- 3 L15 " "5 " "Q H A5 " AQ H A, K #5 1 >15 " "5 " "Q H A5 " AQ H A, 12 ;15 " "5 " "Q H A5 " AQ H A, K 15 " "5 " "Q H A5 " AQ H A, 12 #5 1 "# ''%(- "3 N-S>> ; L15 " "5 " "Q H A5 " AQ H A, K #5 " >15 " "5 " "Q H A5 " AQ H A, 12 #5 1 ;15 " "5 " "Q H A5 " AQ H A, K 15 " "5 " "Q H A5 " AQ H A, G "# '(%( @W(ND"#)(-S>> 8(; L15 " "5 " "Q H A5 " AQ H A, J #5 1 >15 " "5 " "Q H A5 " AQ H #5 " A, # ;15 " "5 " "Q H A5 " AQ H A, G 15 " "5 " "Q H A5 " AQ H #5 1 A, J "# ')%(-S>8  "3 ;15 " "5 " "Q H A5 " AQ H A, J )(-S>8; L15 " "5 " "Q H A5 " AQ H A, I >  15 " "5 " "Q H A5 " AQ H A, A #5 " #Q " ;  15 " "5 " "Q H A5 " AQ H #5 " #Q J   15 " "5 " "Q H A5 " AQ H A, J #5 " H  ;<=>?@ABC>A;DC UV>MP?OPTWTHB;?/01 23145 6078779 6 237:8 64784! XY.LZ,   [ \]Y.L^,&_`/'a^X[ XY.;Z\6  , [ X[bc → ]Y.^X[ X[^cded → ]Y.^O===; X[f → ]Y.^ZX[C\ "# $%.$8-a7bN-S>> 15 " "5 " "Q H A5 " AQ J  B; Lc1I-SAN??< >c1I-S"N??< ;c1H-SAN??< c1"-S"N??< "# &%+-a7bN-S>> QXMQ ;P;A5 1 ).$8; Lc12-S"N??< >c1G-SAN???< ;c11-SAN?< c1"-S"N??< "# '%9-a7<ND12:.$8< @Z-O ;; L-S1QXN< >-S"QXN???< ;-S#QXN?< -SAQXN?< "# (%9-a7wY&-SAN??<)(-S>> 8w; L15 " "5 " ;15 " "5 " "Q H A5 " AQ # >15 " "5 " "Q H A5 A 15 " "5 " "Q H A5 " "# )%(e-a7bNPN B:M-a7bN-S>> 15 " "5 " "Q H L15 " "5 " "Q H ;15 " "5 " "Q # >15 " "5 " "Q H A5 " AQ H 15 " "5 " "Q H A5 " AQ # "# *%(e-a7bNP-S B:M-a7bN-S>> 15 " "5 " "Q # L15 " "5 1 ;15 " "5 " "Q H A5 " AQ H #5 " >15 " "5 " "Q H A5 " AQ H 15 " "5 " "Q H A5 " AQ # "# +%( @W(N15 " "5 " "Q H A5 " AQ H A, J #5 1 ).$8( B; Lc1I-S#N?< >c"#-S#N?B ;c"#-SANB c"I-S#N?B "# ,%9-a7iND"J:.$8i @Z-O ;; L-S#QXN??< >-S#QXNB ;-S#QXN??B -S#QXN??< "# -%? ] "3 N-S>> 15 " "5 " "Q H ).$8] B-SN; Lc12-SAN?< >cG-S"N?< ;c1"-S"N??< c1"-SAN??< "# $.%( i A3 N-S>> QXMQ ;P;"Q H ).$8]; Lc12-S"N???< >c1H-SAN?< ;c1A-S"N???< c1A-SAN???< "# $$%?  q − N-S>> 15 " "5 " "Q H A5 " AQ H ).$8q B Lc1I-SAN??< >c1G-SAN?< ;c1K-S#N?< cI-S#N??< "# $&%<  A ] − N-S>> MQ ;P;A5 " AQ H ).$8] B; Lc[1J-SAQXN< >c[1H-S"QXN< ;c[1I-SAQXN??< c["1-S#QXN???B "# $'%<  ] − N-S>> MQ ;P;"Q H ).$8]; Lc11-SAN?< >c12-S"N???< ;cK-S"N??< c1J-SAN< "# $(%h5\>Q8+-a7-+N?<;"J)9-a7'N; L=DK ;CD1H >4DG D"J ]H]V?W?>?E>gL>V>BFIJhO<?i>?E "# $%9-a7N2;;<;) L( ;= > ]>5 I  "# &%C|Q0WQ> m-tăng dần tính kim loại8T-a75- 1# C 1A < 1"  11 9 LCvv9v< >Cv<vv9 ;<vv9v< 9vv<vC "# '%C|Q0WQ> m-giảm dần tính kim loại8T-a75- "2 ( JH B 1"  AG C Lv(vCvB >B}C}(} ;}(}C}B Cvv(vB "# (%C|Q0WQ> m-giảm dần tính kim loại8T-a75- 1K  11 9 1"  1A < L9}}<} >}<}}9 ;}9}}< <v9vv "# )%$ \ ,Ra L(< ><( ;<( <( "# *%$ \Z,O ,Ra L)<B( ><B( ;B<( B<( "# +%9-a7; 5-'XaN$Q\ L= ;( > 9 "# ,%C|Q0WQ> m-tăng dần tính phi kim8T-a75- 1# C 1I ( 1J  1H C L(}C}C} >(}C}}C ;}C}(}C CvvCv( "# -%C|Q0WQ> m-tăng dần tính phi kim8T-a75- 1H C G 4 K = 1I ( LCv(v4v= >C}(}4}= ;=}(}4}C 4v=v(vC "# $.%$Q ,Ra L=4C >4C= ;4=C C4= "# $$%$Q= ,Ra L(4C9 >C(49 ;49(C (C94 "# $&%9-a7N'+X'dM; L(0 ; >= ?  "# $'%l+X'd8T-a79<C)]WQ> m-t,O; L9vv<vC >Cv<vv9 ;)Cvv<v9 <v9vCv "# $(%l+X'd8T-a7=(B?)]WQ> m-Z,O; L(}=}?}B >?}B}(}= ;=}(}B}? ?}B}=}( "# $)%BT$-a7bT-a79^B>B)]WQ> m-; LBvB>v^v9 >9v^vB>vB ;^vB>vBv9 B>v^v9vB "# $*%C|Q0WQ> m-@T$-a7b8T-a75- K = 1I ( JA ? AJ B L?}B}(}= >=}(}B}? ;?vBv(v= =v(vBv? "# $+%C|Q5WQ> m-=@T$b8T-a75- 1"  1I ( 1H C 11 9 L9}}C}( ;(vCvv9 ;Cvv(v9 9vvCv( "# $,%<0$\; L " C4 A ; A 4 # >(4 #  " C4 # "# $-%C 5T$08T 005-C4 "  " 4 J ( " 4 I C4 A L( " 4 I vC4 A v " 4 J vC4 " >C4 A } " 4 J }( " 4 I }C4 " ; " 4 J }C4 A }( " 4 I }C4 " ( " 4 I }C4 A } " 4 J }C4 " "# &.%$0 ,Ra G  L A 4 # ~ " C4 # ~ A <54 # > " C4 # ~ A <54 # ~ A 4 # ; A 4 # ~ A <54 # ~ " C4 #  A <54 # ~ A 4 # ~ " C4 # "# &$%B•\; L4 " ;94 ><4 A C4 # z " C4 A "# &&%C 5T$@•8T 05-9 " 4< " 4 A 4C4 " L9 " 4}< " 4 A }4}C4 " >< " 4 A }C4 " }4  }9 " 4 ;9 " 4}4}< " 4 A }C4 " 4v9 " 4v< " 4 A vC4 " "# &'%$@• ,Ra L " 4~< " 4 A ~4~(4 >< " 4 A ~4~(4~ " 4 ;4~(4~< " 4 A ~ " 4 (4~< " 4 A ~ " 4~4 "# &(%$@• ,Ra L<4 A ~B4 " ~4 " >B4 " ~4 " ~<4 A ;4 " ~B4 " ~<4 A <4 A ~4 " ~B4 " "# &)%C 5T$B•8T' 05-944 " C4 # <4 A L<4 A }94}4 " }C4 # >94}4 # }C4 # }<4 A ;94}4 " }<4 A }C4 # C4 # }94}4 " }<4 A UV>MP?BFIJhjLO<H?kTlm?h=@iB 0 a • 0i /i i 4  a4 /4 i /i i  • / → → "# $%;-a7N??< 0 8NNc[; L4 ;4 # > " 4  " 4 A "# &%;-a7N?< 0 8NNc[; L4 ;4 " > " 4  " 4 J "# '%];-a7N??<Q$8N:M, Nc[; L] ;] " >] A  # ] "# (%9-a7iN-S>15 " "5 " "Q A c[Q$:M, :;c[Q  0 ; Li # :;i4 " ;i A :;i " 4 J >i " :;i4 A i A :;i " 4 A "# )%Q$8-a7i:M, Nc[i A )9-a7i; L( ;( > ( "# *%40 8-a7i[:Mc[i4 " )9-a7i; L9 ;C >9 C "# +%Qi4 "  'N40WJ2/:m)9-a7i; LAK ;(1" >DHJ CA" "# ,%Qi A  'N, W1IHJ/:m)9-a7i; LAK ;91# >A1 BG2 "# -%Qi " 4 A  'NiWJ"K#/:m)9-a7i; L<"I ;(#2 >"# <12G "# $.%40 8-a7i[:Mc[i4 A  Q8N:M,  S, WJGG/:m)]T'.-a7b8i) "# $$%40 8-a7i[:Mc[i4 "  Q8N:M,  S, W"J/:m)]T'.-a7b8i) "# $&%40 8-a7i[:Mc[i " 4 J  Q8N:M,  SiWG"AJ/:m)Si) "# $'%Q$8+-a7:M, N,\i A  Q 0 S 40WJHA#/:m)]T'.-a7b8i) "# $(%Q$8+-a7:M, N,\i #  Q 0 S iW#HHI/:m)]T'.-a7b8i) K  B=D=;<=HVjLO<H?@ABTR??DnB >?@1#ABC3=D > >EFGD → H<I; >JKFG1=3HH "# $%( KIJQZ[ ; ;:M " 4S%$$-'&'; 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