Electron config practice

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

• Neon
• Magnesium
• Aluminum
• Potassium

Which is the electron configuration for an oxygen atom?

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

How many valence electrons does Chlorine have?

• 5
• 2
• 7
• 5

Which element is pictured? (each line/arrow represents an electron)

• neon
• fluorine
• magnesium
• argon

Which of the following is a p block element?

• Ca
• Ar
• Re
• Au

What atom matches this electron configuration?

1s²2s²2p⁶3s²3p⁶4s²

• Calcium

• Sodium

• Argon

• Magnesium

What electron configuration matches an oxygen atom?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

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

• 1 electron

• 2 electrons

• 3 electrons

• 4 electrons

There are 4 different types of subshells(orbitals) s,p,d,f

• true

• false

How many electrons can the first orbital hold?

• 1
• 2
• 8
• 0