Atomic Structure

Front

What does the '-131' in Iodine-131 represent?

Back

mass number.

Front

What two subatomic particles must be equal for an atom to have no charge (neutral)?

Back

protons and electrons.

Front

What is Al^+3?

Back

ion.

Front

What is the atomic mass of an element?

Back

weighted average of the masses of the isotopes of the element.

Front

How is the mass number of an atom calculated?

Back

number of protons plus number of neutrons.

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, Electrons.

Front

What charge do protons carry?

Back

Positive charge.

Front

What charge do electrons carry?

Back

Negative charge.

Front

What is the charge of a neutron?

Back

Neutral (no charge).

Front

Where are protons located in an atom?

Back

In the nucleus.