Question

Atomic weight of carbon, nitrogen and oxygen are 12, 14, and 16 respectively.
An atom of atomic weight 14 and nuclear charge +6 an isotope of:
(a) Oxygen (b) Carbon (c) Nitrogen (d) None of these
has mass number 23 other isotopes of sodium will have​

Answer 1

Explanation:

Option C) Nitrogen

mass number 23 other isotopes of sodium will have 12 neutrons.

Answer 2

               atomic mass=14

               atomic number(charge)=6

         which is similar to the isotope of carbon whose atomic mass is 12 and atomc number is 6.  Hence (b) carbon is correct answer.