Question

The atomic number of nitrogen is 7. Nitrogen-15 has a greater mass number than nitrogen-14 because the atomic nucleus of nitrogen-15 contains ________.

Answer 1

Answer:

The answer to your question is one more neutron

Explanation:

Nitrogen-14 and Nitrogen-15 are isotopes, these molecules have the same number of protons but a different number of neutrons.

In the example given

Nitrogen-14  has 7 protons and 7 neutrons and,

Nitrogen-15 has 7 protons and 8 neutrons.

These molecules are considered the same element because they have the same physical and chemical properties.

Answer 2

Answer:8 neutrons

Explanation:

The nucleus of an atom houses the proton number (atomic number) and neutron which sums up to give the mass number of the atom... Nitrogen 14 will yield 7 neutrons with mass number 14 while nitrogen 15 give 8 neutrons with mass number of 15 gram per mole