Electron configuration and Orbitals

The electron configuration of an atom is 1s²2s²2p⁶3s²3p² The number of valence electrons in the atom is

• 2

• 4

• 8

• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What atom matches this electron configuration?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc

• Copper

• Nickel

• potassium

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What electron configuration matches an oxygen atom?

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

Tags

NGSS.HS-PS1-1

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The electron configuration of an atom is 1s²2s²2p⁶.  The number of valence electrons in the atom is 

• 3
• 6
• 8
• 10

Tags

NGSS.HS-PS1-1

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is depicted from this orbital diagram

• Fluorine
• Neon
• Chlorine
• Argon

Tags

NGSS.HS-PS1-1

This orbital diagram represents which element?

• C

• B

• N

• O

Tags

NGSS.HS-PS1-1

How many electrons can an p sublevel hold?

• 2

• 3

• 6

• 10

How many electrons can an f sublevel hold?

• 2

• 6

• 10

• 14