Electrons Unit Test Review

What element has the following electron configuration? [Ar] 3d¹⁰4s²4p³

• As
• P
• Se
• Ga

In a stable atom, the atomic number is equal to...

• neutrons
• electrons
• atomic mass
• what is a stable atom?

1.  What is the shape of an s orbital?

• sphere
• dumbbell
• double dumbbell
• TOO COMPLEX TO KNOW IT.

How many electrons can each p orbital hold?

• 6
• 3
• 2
• 4

Which is associated with more energy? 

• 2p
• 2s
• 3p
• 1s

How many orbitals are in the f sublevel

• 1
• 3
• 5
• 7

What is the correct electron configuration for Selenium

• 1s²2s²2p⁶3s²3p⁶4s²4d¹⁰4p⁴
• 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁴
• 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³
• 1s²2s²2p⁶3s²3p⁶4s²4d¹⁰4p⁴³

Which is a particle of electromagnetic radiation with no mass that carries a quantum of energy?

• electron 
• neutron 
• microwave
• photon 

What are patterns made when excited electrons emit bright lines of certain wavelengths?

• electromagnetic spectra
• atomic emission spectra
• spectroscopes
• prisms

What atom matches this electron configuration?
[Xe] 6s² 4f¹⁴ 5d⁹

• Mercury
• Gold
• Platinum
• Thallium