Atom consist of electrons , protons and neutrons . If the mass attributed to neutron were halved and that attributed to the electrons were doubled , the atomic mass of ` 6C^(12)` would be approximately :

Options

A. Will remain approximately the same
B. Will become approximately two times
C. Will remain approximately half
D. Will be reduced by `25% `

Answer

D

Explanation

No change by doubling mass of electrons however by reducing mass of neutron to half total atomic mass becomes 6 + 3 instead of 6 + 6. Thus, reduced by 25%.