!"#$ % & '( )*& '+ ) ,+ )) # ,- . #/ 0 1 23 4 5 )6+ 78#9:# ;<0=># Cho nguyên tư ̉ khô ́ i cu ̉ a ca ́ c nguyên tô ́ như sau: H = 1, C = 12, N = 14, O = 16, Na = 23, Mg = 24, Al = 27, S = 32, Cl = 35,5 K = 39, Ca = 40, Cr = 52, Fe = 56, Cu = 64, Zn = 65, Br = 80, Ag = 108, Ba = 137. ? ''& ' ;@ A38B A3)5 #A3@ $ 'A3)? !" # $%&' ' ( # )* + , - +. . " ( /' 0012' ' 3 - - 00 ( 4.5 ?++4 C?!!+ '?4 . D?6!. 'A3+? - 7 8% - 39# * :;<* + :# )* + → * :; )* + :<)* + :# * #' 3 - - - ( ( 9 ? C?+6 '?6 D? 'A36? .##*=.#**# ( .#** # 6 ( >* ?# )% - 7 - ( ( %' - / @ - ( 9 ?!+4 C?+ '?A6! 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B$%& ( /" ( / +" %" /$%& ( !/ - G ( ( B '" ( 44* # B ( 9 ?# + ( # + C? # ( # ! '?# + ( # D?# + ( # + 'A36G?F' # )* + 3 - 7 03 ( 9J0) → )* → )* → # )* + F ( J0) ' - 3 - 7 /' # )* + L452' ' 3 - - Q " ( ( 4.5 ?. C?! '?.4 D?. 'A361?G ( ( ( /, ( %%" ( - * =++# * ( 444" %" @ - ' %%" " - ( ( 7 ' 4.5' - " ' - " %" - %@ - ( 9 ?. C?.+ '?! D?+ 'A3@ ?I %" )* * Q ;*# BK B ( 31 ?; )* ;* C?; )* ;* '?;#)* ;* ;* D?; )* ;* ;* ? %H :#H 5B. / "#2A #I C$ ?J&' ' ) A38B A3@)5 #A3! $ 'A3@)?F ' ,7 T% - B : ?B , C : ?CK " ( ( 3' 1 ?B : :C → C : :B C?B : :C → B:C : '?B:C : → B : :C D?B:C : → B : :C 'A3@+?; # **#< ( # **#.6<" ( ' - # **#30 9 ? - ( C?, ( '?, D? - 'A3@6?I #)* + - ( 31 ?<J02 C?> * J0$* & '?J02 D?D*J0$* & 'A3 @@? .. # 8# 8**#= .. # 8# 8**#= .. #** ! # 6 6. *#< CP ( % C , ( 9 ?L!. C?! '?. D?.+4 'A3@!?F . 770 .0 ( ' - 030 ' 3 4.5" ( B*# ( B ( ' % - 7 - ( ( " ( C; C ( 9 ? C?!+. '?L!4 D?+!. 'A3@E?6!/ J0 ( #<)% - ( ( B ( %" # >* ( B" ( C %" % ( %%" ( , @ - ( 9 ?4A. 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( # 4 'A3!1?)O ( 3 / - '%' O ( 31 ? α 8O ( α 8WO C? α 8O ( β 8WO '? α 8O ( α 8O D? α 8O ( β 8O 'A3E ?*7 +! ( 0" ( ( ' 4.* ( / 0 - >* ?# " ( +/ FF - ( 9 ? # 6 *# ( # A *# C?# *# ( # A *# '?# *# ( # 6 *# D?# *# ( + # L *# 88888888888888888888888888888888888888888KKKKKKKKKKKLKKKKKKKKKK F6?68<MN . 65, Br = 80, Ag = 108, Ba = 137. ? ''& ' ;@ A3 8B A3 )5 # A3 @ $ &apos ;A3 )?. ( 9 ?$& ( $6& C?$ & ( $+& '?$& ( $+& D?$ & ( $6& C?J&'