Atoms of a given element will have the same mass. T or F?

False the key to the question is that atoms have isotopes. That means that the number of neutrons are different in each isotope.

The most common hydrogen has no neutrons.

1 electron

1 proton

0 neutrons.

Isotope One of hydrogen has 1 neutron

1 electron

1 proton

1 neutron

The heavy weight of the family has 2 neutrons

1 electron

1 proton

2 neutrons.