Unit 2

This is a correct dot diagram for fluorine (F)

• true
• false

Which is the electron configuration for an oxygen atom?

• 1s²2s²2p⁶3s²3p⁶4s²
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶

Na₂S

• Sodium Sulfide
• Sodium Sulfate
• Sodium Sulfite
• Disodium Sulfide

What is the shorthand electron configuration for Sulfur atom?

• [Ar] 3p⁴
• [He] 3s²3p⁴
• [Ne] 3s²3p⁴
• [Na] 3s²3p³
  

How many electrons should Oxygen have around its Lewis dot model?

• 5
• 6
• 7
• 8

This picture shows a...

• Ionic Bond
• Covalent Bond
• Both bonds
• Neither bond

Which formula represents a nonpolar molecule?

• HBr
• H₂S
• CBr₄
• PCl₃

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Which molecule would have this molecular geometry?

• BF₃
• CH₄
• PCl₅
• CO₂

The type of bond where valence electrons are SHARED is called: 

• Covalent
• Ionic
• Hydrogen
• Isotope