Unit 3 Review (Chemistry)

Heisenberg Uncertainty Principle says both the ____ and position of an electron cannot be measured.

• Velocity

• Shape

• Mass

• Charge

The ground state electron configuration of Fe is

• 1s²2s²2p⁶3s²3p⁶4s²3d⁶

• 1s²2s²3s²3p¹⁰

• 1s²2s²2p⁶3s²3p⁶4s²4d⁶

• None of these

Tags

NGSS.HS-PS1-1

The energy of a photon that has a frequency of 18.21 x 10¹⁵ Hz is

• 1.99 x 10^-25 J

• 5.44 x 10^-18 J

• 1.21 x 10^-17 J

• Impossible to calculate

Tags

NGSS.HS-PS4-1

The energy of a photon increases as its frequency _______________ and as its wavelength ___________________.

• Increases, increases

• Decreases, increases

• Decreases, decreases

• Increases, decreases

Tags

NGSS.HS-PS4-1

Which principle tells us that electrons go to the lowest energy state first?

• Hund's rule

• Pauli exclusion principle

• Aufbau principle

• More than one of these

Which element has the electron configuration: [Ne] 3s²3p⁴?

• Al

• S

• Si

• Ne

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The minimum amount of energy that can be gained or lost by an electrons is a

• Planck

• Orbital

• Quantum

• Quantum number

What is the lowest energy state of an atom called?

• Chaotic state

• Excited state

• Ground state

• More than one of these

A 3D region around the nucleus of an atom that describes an electron's probable location is

• Ground state

• Orbital

• Photoelectric effect

• Quantum number

If the wavelength is 6.234 x 10^-7 m, what is the associated frequency?

• 1.87 x 10⁶ Hz

• 4.81 x 10⁶ Hz

• 4.81 x 10¹⁴ Hz

• Impossible to calculate

Tags

NGSS.HS-PS4-1