# Question 6d153

Jun 16, 2017

The answer is C. $\text{_9^19"F}$.

#### Explanation:

The nuclear equation is

""_7^14"N" + ""_2^4"He" → ?#

The sum of the subscripts and of the superscripts must be the same on both sides of the equation.

Thus, the equation becomes

$\text{_7^14"N" + ""_2^4"He" → ""_9^18"X}$

Element 9 is fluorine, so the complete equation is

$\text{_7^14"N" + ""_2^4"He" → ""_9^18"F}$