Chemistry 5.1 & 5.2

The electrons in an atom can exist between energy levels.

• True

• False

The quantum mechanical model of the atom estimates the probability of finding an electron in a certain position.

• True

• False

In general, the higher the electron is on the energy ladder, the farther it is from the nucleus.

• True

• False

The term that is used to label the energy levels of electrons.

• atomic orbitals

• quantum mechanical numbers

• quantum

• principal quantum numbers (n)

A (n) ___________ is often thought of as a region of space in which there is a high probability of finding an electron.

• atomic orbital

• quantum mechanical model

• quantum of energy

• principal quantum numbers 9n)

Discovered electrons

• Rutherford

• Bohr

• Democritus

• Thomson

The rule stating that an atomic orbital may describe at most 2 electrons.

• Aufbau principle

• Pauli exclusion

• Hund's rule

The ways in which electrons are arranged into orbitals around the nuclei of atoms are called _____________.

• principal quantum numbers (n)

• electron configuration

• energy levels

• n = 5

n = 3 has _______ electrons.

• 32

• 16

• 18

• 9

4f sublevel has _______ orbitals.

• 1

• 3

• 5

• 7