True or False: Mass Number, Atomic Number, Atomic Mass & Isotope

The atomic number tells us how many protons are in an atom.

All atoms of the same element must have the same atomic number.

The mass number is found by adding the number of protons and electrons.

Atomic mass is a decimal number because it is an average of isotopes.

Isotopes are atoms of the same element with different numbers of neutrons.

Isotopes have different atomic numbers.

The mass number is always shown as a decimal on the periodic table.

You can calculate the number of neutrons by subtracting the atomic number from the mass number.

Atomic mass is usually close to the mass number of the most common isotope.

All isotopes of an element must have the same mass number.