Chapter U1.13, Problem 9E

Interpretation Introduction

Interpretation:

The isotope of nitrogen that is found in nature among the three given isotopes needs to be determined.

Concept introduction:

A natural isotope is the most stable isotope in which the neutron to proton ratio is not too high or low and generally it is 1.

Answer to Problem 9E

$\mathrm{N}$ isotope is found in nature.

Explanation of Solution

In $\mathrm{N}$, there are 7 protons, 7 electrons and 7 neutrons. Neutrons to protons ratio n/p = 7/7 = 1

This is a very stable isotope. When n/p is very high, the nucleus is prone to breaking, thus leading to new elements. Similarly, when n/p ratio is low, it will try to increase the ratio by absorbing electron or emitting positron ( + ₁e⁰).

Conclusion

Thus, $\mathrm{N}$ isotope is the most stable isotope of nitrogen which is found in nature.