What is the maximum number of electrons that can be present in each energy level?

• n

• n²

• 2n

• 2n²

What is the lowest energy state of an atom called?

• the ground state

• the excited state

• the solid state

• the chaotic state

The concept that all moving particles have wave characteristics is attributed to ___________.

• de Broglie

• Thomson

• Heisenberg

• Bohr

Tags

NGSS.HS-PS4-3

In the figure, why must the photon's wavelength increase after the collision?

• The photon changes direction.

• The photon changes speed.

• The photon gives up some energy to the electron.

• The photon starts spinning.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the figure, why are there dots beyond the "boundary" of the atomic orbital?

• the boundary encloses the volume in which the electron is found 90% of the time

• the boundary is three-dimensional, while the picture shows only two dimensions

• experimental error

• the boundary encloses the volume in which the electron is found 50% of the time

Which principle states that we cannot know the location AND momentum of an electron simultaneously?

• Bohr
• Hesienberg
• Shrodinger
• Einstein

The area of 3D space where an electron is likely to be found is called a(n)

• orbit

• ring

• nucleus

• orbital

What orbital shapes are found at the 2nd energy level

• s only
• s and p
• s, p, d and f
• p only

How many orbitals are at the "p-sublevel"?

• 1
• 3
• 5
• 7

How many electrons can fit into a d- orbital?

• 6

• 2

• 8

• 10