Electron Configuration

What is the total number of valence electrons in an atom with the electron configuration 1s²2s²2p⁶3s²3p⁵

• 7

• 2

• 3

• 5

Tags

NGSS.HS-PS1-1

This orbital diagram represents:  

• C
• B
• N
• O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can the s sublevel hold?

• 14
• 10
• 2
• 6

Tags

NGSS.HS-PS1-1

How many electrons can the d sublevel hold?

• 14
• 10
• 2
• 6

Tags

NGSS.HS-PS1-1

Which orbital shows a violation of the Pauli Exclusion Principle?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-1

Which orbital shows a violation of the Aufbau Principle?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-1

Which example shows a violation of Hund's Rule?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

What atom matches this electron configuration?
1s² 2s² 2p⁶ 3s²

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

How many p orbitals are there in a sublevel?

• 2
• 1
• 4
• 3

What element has the valence shell configuration
3s² 3p²

• Al
• B
• Si
• Ga

Tags

NGSS.HS-PS1-1