Question

an element is made up of only one kind of atom. 2 points true false the average atomic mass is equal to the number of neutrons in an atom. 2 points true false atoms that have the same number of protons but different number of neutrons are called isotopes. * 2 points true false

Explanation:

1. By definition, an element consists of only one - kind of atom.
2. The average atomic mass is the weighted - average of the masses of its isotopes, not just the number of neutrons.
3. Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.

Answer:

1. True
2. False
3. True