Question

The atomic number of carbon is 6, and the atomic number of nitrogen is 7. Compared to carbon-14, nitrogen-14 has________ proton(s) and ______ neutron(s).

A. the same number of; one more

B. the same number of; the same number of

C. one less; one more

D. one more; the same number of

E. one more; one less

Answer 1

Explanation:

carbon of mass 14amu is an isobar of carbon.

no.of protons in carbon-14=6

no.of neutrons in carbon=14-6=8

nitrogen also has mass of 14amu

no.of protons in nitrogen=7

no.of neutron in nitrogen=7

therefore option E is correct