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Question: An atom of mass number 15 and atomic number 7 captures an \(\alpha -\)particle and then emits a prot...

An atom of mass number 15 and atomic number 7 captures an α−\alpha -particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be.

A

14 and 2

B

15 and 3

C

16 and 4

D

18 and 8

Answer

18 and 8

Explanation

Solution

7X15+2He4→1P1+8Y187X^{15} +_{2}He^{4} \rightarrow_{1}P^{1} +_{8}Y^{18}