Question

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) 31 15 x (b) 31 16 x (c) 16 15 x (d) 15 16 x.

Answer 1

Step-by-step explanation:

A is the correct representation because mass number is 15+16=31 and atomic number is 15 which is equal to number of electrons so its 31X15