Quantum Theory (Chapter 7) Review

What atom matches this electron configuration?
1s²2s²2p⁶3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The total number of orbitals that can exist at the second main energy level (n = 2) is

• 2

• 3

• 4

• 8

The distance between two successive peaks of a waves is the

• speed

• frequency

• wavelength

• energy

Tags

NGSS.HS-PS4-1

A line spectrum is produced when an electron moves from one energy level

• into the nucleus.
• to another position in the same sublevel.
• to a higher energy level.
• to a lower energy level.

Tags

NGSS.HS-PS4-3

If electrons in an atom have the lowest possible energies, the atom is in the

• ground state.
• inert state.
• excited state.
• radiation-emitting state.

The statement that no two electrons in the same atom can have the same four quantum numbers is

• the Pauli exclusion principle.
• Hund's rule.
• Bohr's law.
• the Aufbau principle.

Since electrons are moving so fast, we can never know both their speed and position. Who said this?

• Bohr

• Heisenberg

• Rutherford

The number of orbitals in 'p' sub level

• 2

• 3

• 4

• 6

A three-dimensional region around a nucleus where an electron may be found is called a(n)---?

• orbit

• circle

• orbital

• quantum