Electron Configuration Practice

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

• Neon
• Magnesium
• Aluminum
• Potassium

Tags

NGSS.HS-PS1-1

Which is the electron configuration for an oxygen atom?

• 1s²2s²2p⁶3s²3p⁶4s²
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶

Tags

NGSS.HS-PS1-1

What is the maximum number of electrons that an orbital can have?

• 1 electron
• 2 electrons
• 3 electrons
• 4 electrons

How many d orbitals are there in a given sublevel?

• 1
• 3
• 5
• 7

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

How many valence electrons does Chlorine have?

• 5
• 2
• 7
• 5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does phosphorus have?

• 5
• 2
• 8
• 15

Tags

NGSS.HS-PS1-1

What element has the valence shell configuration

3s² 3p²

• Mg

• B

• Si

• Ga

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is pictured?

• neon
• fluorine
• magnesium
• argon

Tags

NGSS.HS-PS1-1

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

• Rb
• Nb
• Ag
• Sb

Tags

NGSS.HS-PS1-1