Molecules and Formulas Quiz Review 6

How many valence electrons are in Phosphorus?

• 15
• 4
• 5
• 31

Tags

NGSS.HS-PS1-1

After drawing in your bonds, what do you do if you don't have enough electrons to get each atom to its octet?

• Place dots until everything has eight
• Place dots only around the terminal atoms
• Add a multiple bond
• Have eight only around the central atom

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

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

• 1
• 3
• 4
• 5

Tags

NGSS.HS-PS1-1

In the correct Lewis structure for water, how many unshared pairs of electrons will oxygen have?

• 1
• 4
• 3
• 2

How many electrons do atoms need to be stable?

• 1
• 2
• 6
• 8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many covalent bonds does carbon need to form in order to have a full octet?

• 2
• 3
• 4
• 5

Tags

NGSS.HS-PS1-1

Hydrogen needs _____ electrons in its valence shell to be stable.

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a Lewis structure, what do you do  with the total number of valence if your ion is + charged?

• Divide the valence number by 1
• Multiply the valence number by 1
• Add 1 to the valence number
• Subtract 1 from the valence number

Which of the following is the correct Lewis structure for the compound PBr₃?

• structure A
• structure B
• structure C
• structure D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2