STAAR - Electron Configuration

If an atom has 12 protons, how many valence electrons will that atom have? 

• 2
• 10
• 8
• 6

Tags

NGSS.HS-PS1-1

Which atom is it who has 3 energy levels and 4 valence electrons? 

• Carbon
• Lithium
• Silicon
• Aluminum

Tags

NGSS.HS-PS1-1

Identify this atom: 

• Lithium
• Chlorine
• Phosphorus 
• Fluorine

Tags

NGSS.HS-PS1-1

What is the number of valence electrons for Carbon?

• 12
• 6
• 5
• 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many energy levels does Hafnium have?

• 4
• 72
• 6
• cannot determine

How can you tell how many valence electrons an atom has? 

• APE MAN
• By the Group 
• By the Period
• By the atomic number

How can you tell how many energy levels an atom has? 

• APE MAN
• By the Group
• By the Period
• By the atomic mass

Tags

NGSS.HS-PS1-1

How many valence electrons does Calcium have? How many energy levels does Calcium have?

• 2 valence: 4 energy levels 
• 20 valence:  4 energy levels 
• 4 valence: 2 energy levels 
• 2 valence: 3 energy levels 

Tags

NGSS.HS-PS1-1

If an atom has 4 protons, how many valence electrons will it have?

• 4
• 6
• 2
• 0

Tags

NGSS.HS-PS1-1

What is the rule to follow when arranging electrons for a BOHR model of an atom?

• 2-2-8
• 2-8-10
• 2-4-6-8
• 2-8-8