Electron configuration

How many electrons can the first energy level hold?

• 1
• 2
• 8
• 0

The second shell from the center of an atom can hold how many electrons?

• 2

• 6

• 8

• 18

Valence electrons are located...

• inside the nucleus

• in outer space

• on the outermost orbit of an atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 10

• 2

• 8

• 18

Tags

NGSS.HS-PS1-1

• 14

• 4

• 3

• 28

Tags

NGSS.HS-PS1-1

How many valence electrons are represented here?

• 7
• 5
• 2
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.HS-PS1-1

What is the electron configuration of sodium?

• 2.8
• 2.8.2
• 2.8.1
• 11

Tags

NGSS.HS-PS1-1

Which element has an electron configuration of 2.5?

• Oxygen
• Nitrogen
• Phosphorus
• Carbon

Tags

NGSS.HS-PS1-1

Which element has an electron configuration of 2.8.8?

• Lead
• Flourine
• Neon
• Argon

Tags

NGSS.HS-PS1-1