Chemistry Unit 4 Practice Test

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

• 3
• 6
• 8
• 10

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

Tags

NGSS.HS-PS1-1

What is the noble gas shorthand electron for Sulfur atom?

• [Ar] 3p⁴
• [He] 3s²3p⁴
• [Ne] 3s²3p⁴
• [Na] 3s²3p⁴
  

Tags

NGSS.HS-PS1-1

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

NGSS.HS-PS1-2

This orbital diagram represents:  

• C
• B
• N
• O

Tags

NGSS.HS-PS1-1

Which family would have electrons filling orbitals in the d-block

• Transition metals
• Halogens
• Noble Gases
• Inner-Transitions

How many electrons can the d sublevel hold?

• 8
• 10
• 2
• 4

This orbital diagram represents:  

• C
• B
• N
• O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is incorrect about this orbital diagram?

• Both arrows in the 2p box should be pointing up
• There is nothing incorrect with this diagram
• In the there should only be 1 orbital in the first 2p box and one in the 2nd 2p box
• All the arrows should be pointing up.

Tags

NGSS.HS-PS1-1

How many valence electrons are found in atoms of group 1?

• 7
• 6
• 4
• 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2