Atomic structure

Front

Electrons have a positive charge.

Back

False

Front

The mass number of an atom is equal to:

Back

The number of protons plus the number of neutrons.

Front

The atomic mass of an element is primarily determined by:

Back

The number of protons and neutrons.

Front

Which element has the highest first ionization energy?

Back

Helium.

Front

Which of the following is NOT a fundamental subatomic particle?

Back

Molecule.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.