# The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?

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The number of electrons in an element X is 15 and the number of neutrons
is 16. Which of the following is the correct representation of the element?

A. $\frac{31}{35}$X

B. $\frac{31}{16}$X

C. $\frac{16}{15}$X

D. $\frac{15}{16}$X

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Any element is represented symbolically as:

Here mass number = 15 + 16 = 31

Atomic number = number of protons = 15

Hence, the correct representation of the element with 15 electrons and 16 neutrons is
$\frac{31}{15}$X.

Hence, the correct option is – A