Unit 3 Exam Review

What element has the following electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

• Br
• Cl
• Ar
• Kr

Tags

NGSS.HS-PS1-1

How many valence electrons does this electron configuration have?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

• 2
• 5
• 7
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many total electrons does this electron configuration have?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵

• 5

• 7

• 17

• none of the above

How many orbitals do p orbital have

• 3
• 5
• 6
• 10

How many orbitals do d orbital have

• 3
• 5
• 6
• 10

How many electrons do d orbital have?

• 3
• 5
• 6
• 10

What relationship does wavelength have with frequency and energy?

• A proportional relationship. As wavelength increases so does frequency and so does energy
• An inverse relationship. As wavelength decreases, frequency increases and so does energy
• A proportional relationship. As wavelength increases so does frequency and energy decreases
• An inverse relationship. As wavelength decreases, frequency increases and energy decreases

Tags

NGSS.HS-PS4-1

How many kj/mol does light have if it has a wavelength of 727nm?

• 2.73x10^-19 kj/mol
• 1.64x10¹¹ kj/mol
• 164000 kj/mol
• 164 kj/mol

Tags

NGSS.HS-PS4-1

What happens to the energy of an electron as it goes from an excited state to the ground state?

• The energy of the electron decreases and a photon is absorbed
• The energy of the electron increases and a photon is absorbed
• The energy of the electron decreases and a photon is released
• The energy of the electron increases and a photon is released

Tags

NGSS.HS-PS3-1

NGSS.HS-PS4-3

Calculate the energy of a photon that has a frequency of 5.0x10¹⁵Hz.

• 6.0x10^-8J
• 4.0x10^-41J
• 3.3x10^-18J
• 5.7x10^-21J

Tags

NGSS.HS-PS4-1