First semester final review #2: EMS and electrons

Front

What is the relationship between the charges of an electron and a proton?

Back

They are equal but opposite.

Front

Which electrons have the most energy?

Back

Electrons furthest from the nucleus.

Front

What happens when an atom in an excited state gives off a photon of radiation?

Back

The energy of the photon is equal to the difference in energy between the atom's excited state and its ground state.

Front

How many energy levels does an atom have if it has 2 electrons?

Back

2 energy levels.

Front

What is the lowest energy state of an atom called?

Back

Ground state.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a proton?

Back

Positive.

Front

What is an excited state of an atom?

Back

A state where an atom has absorbed energy and one or more electrons have moved to a higher energy level.

Front

What is the principle quantum number?

Back

It indicates the main energy level occupied by an electron.

Front

What is electron configuration?

Back

The distribution of electrons among the energy levels and sublevels of an atom.