Unit 3 Review

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

• 3
• 6
• 8
• 10

How many electrons can the d sublevel hold?

• 14
• 10
• 2
• 6

How many electrons can the s sublevel hold?

• 14
• 10
• 2
• 6

Each row on the periodic table represents:

• an energy level

• a sublevel

• an electron

• an orbital

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

• true
• false

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

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 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box pointing in the same direction.

• All the arrows should be pointing up.

In an electron configuration, what follows 4s?

• 4p

• 3d

• 4s

• 2f

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

What is the noble gas configuration for Neon?

• [Ne]
• [He]2s²2p⁶
• [F]2p¹
• [Ne]2s²1p⁶