Which of the following is not true for the atoms 13N,14N,and 15N?
A)They all have the same mass number.
B)They are isotopes.
C)They all have the same atomic number.
D)They all have 7 protons.
E)They all have 7 electrons.

Question

Quizplus · Accepted Answer

The atoms 13N, 14N, and 15N have different mass numbers. 13N has a mass number of 13, 14N has a mass number of 14, and 15N has a mass number of 15. Mass number is the sum of protons and neutrons in an atom. As the number of neutrons is different for each atom, their mass numbers also differ.

Which of the Following Is Not True for the Atoms