Question #6d153

1 Answer
Jun 16, 2017

Answer:

The answer is C. #""_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

#""_7^14"N" + ""_2^4"He" → ""_9^18"X"#

Element 9 is fluorine, so the complete equation is

#""_7^14"N" + ""_2^4"He" → ""_9^18"F"#