the atomic masses of three elements a,b,and c having similar chemical properties are 7,23and39 respectively then a) calculata the average atomic masses of elements b)compare the average atomic mass with atomic mass of b c) what could the elements a,b,andc be
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(1)avg mass =7+23+39/2
=34.5
(2)1:3.2:5.5
(3)a=Li
b=Na
c=K
=34.5
(2)1:3.2:5.5
(3)a=Li
b=Na
c=K
namo17:
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please explain step 2) I did not undetstand
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it is ratio related to the 1st one that is at. no. 7
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Answer:A=7
C=23 SO,WE SHOULD FIND B
Explanation:ADD A AND C AND DIVIDE WITH 2
= 23+7
=30
=30/2
B=15
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