Atomic Structure

Front

How many electrons are in an atom that has an atomic number of 34, a mass number of 74 and a charge of -2?

Back

36

Front

The center of an atom is called the ________________.

Back

nucleus

Front

Subatomic particle that has a positive charge

Back

proton

Front

How many electrons does sulfur have?

Back

16

Front

Negative ions (anions) form when neutral atoms _________ electrons.

Back

gain

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a neutron?

Back

A subatomic particle with no charge found in the nucleus of an atom.

Front

What is an electron?

Back

A negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an ion?

Back

An atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.