Lewis Dot Structures Covalent and Ionic

If the calculated ΔEN for a bond is 2.5 the bond would be...

• Ionic

• Polar covalent

• Non polar covalent

How many NON BONDING electron domains are around the central atom?

• 0

• 2

• 3

• 4

According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?

• Pairs of valence electrons

• Inner shell electrons

• Mobile Electrons

• Electrons closest to the nucleus

Metals and nonmetals form which kind of bond?

• Polar covalent

• Ionic

• Non-polar covalent

• Metallic

How many valence electrons are in Phosphorus?

• 15

• 4

• 5

• 31

Tags

NGSS.HS-PS1-1

What is the molecular shape of H₂S?

• linear

• trigonal planar

• tetrahedral - bent

• tetrahedral

Is this molecule symmetrical or asymmetrical?

• Asymmetrical

• Symmetrical

If the calculated ΔEN for a bond is 0.81 the bond would be...

• Ionic

• Polar covalent

• Non polar covalent

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

With only 2 elements there is no real central atom.

• A

• B

• C

• D

Electrons are ________________ to form ionic bonds and electrons are ________________ to form covalent bonds.

• transferred; shared

• shared; transferred

• lost; gained

• gained; lost

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2