Electron Configurations and Quantum Numbers

What is the total number of energy levels used by an atom of aluminum
(Al, atomic #13) in the ground state?

• 3
• 7
• 13
• 0

How many orbitals are available to hold electrons in the 6th energy level (n=6)?

• 9

• 16

• 26

• 36

According to the Aufbau Principle, which sublevel should starting filling with electrons after 5s?

• 6s
• 5p
• 4d
• 3f

Identify the element whose electron configurations ends with 5p³

• As
• Te
• Sb
• Sn

Tags

NGSS.HS-PS1-1

Which of the following quantum number sets is not allowed?

• { 3, 2, +1, -1/2 }
• { 5, 3, -1, +1/2 }
• { 12, 1, +2, +1/2 }
• { 7, 6, -5, -1/2 }

According to the Aufbau Principle, which sublevel should starting filling with electrons before the 3p sublevel?

• 3s
• 2p
• 4s
• 4p

Identify the element in Period 5 that has 1 valence electron?

• Rb
• Nb
• Ag
• Sb

Tags

NGSS.HS-PS1-1

What element has this electron configuration?

• hydrogen

• helium

• lithium

• beryllium

Tags

NGSS.HS-PS1-1

Which element is represented by this orbital notation?

• carbon

• nitrogen

• oxygen

• fluorine

Tags

NGSS.HS-PS1-1

The NOBLE GAS electron configuration of chlorine is illustrated above. It can be written as

• [Ne]3s²3p⁵

• 1s²2s²2p⁶3s²

• 1s²2s²2p⁶3s²3p⁵

• [He]3s²3p⁵

Tags

NGSS.HS-PS1-1