Atomic Structure and Spectra

Front

What is the main part of an atom that contains protons and neutrons?

Back

The nucleus.

Front

What are the negatively charged particles that orbit the nucleus of an atom called?

Back

Electrons.

Front

How many electron shells can an atom have?

Back

An atom can have multiple electron shells, typically ranging from 1 to 7.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral (no charge).

Front

What is the charge of an electron?

Back

Negative.

Front

What happens when an electron absorbs energy?

Back

It moves to a higher energy level or excited state.

Front

What happens when an electron emits energy?

Back

It returns to a lower energy level or ground state.

Front

What is the atomic number of an element?

Back

The number of protons in 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.