Mass number of isotones A and B are respectively 30 and 31 respectively. If atomic number of B is 15, find out atomic number of A. PLEASE GIVE WITH WORKING.
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Answer:and is 14
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Atomic number of A is 14.
Given:
A and B are isotones.
Mass numbers of A and B are 30 and 31.
Atomic number of B is 15.
To find:
Atomic number of B.
Solution:
Number of neutrons in A = Number of neutrons in B
30 - x = 31 - 15
30 - x = 16
x = 30 - 16
x = 14
So, atomic number of A is 14.
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