lewis dot structures

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

• A

• B

• C

• D

Answer explanation

B is the only option that shows both fluorine atoms being satisfied by the octet rule.

F is a halogen and halogens can only create one single bond!

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Three pairs of electrons are shared in a

• Single bond

• Double bond

• Triple bond

What is the correct formula for this molecule?

• Si₄F
• SiF₄
• SiF
• Si₄F₄

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

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

By replacing the element symbol, this could be a diagram of which element?

• Li

• Al

• C

• Be

Tags

NGSS.HS-PS1-1

NH₃ has how many lone pairs?

• 0

• 1

• 2

• 3

How many total valence electrons are participating in bonding in the molecule above?

• 8

• 4

• 2

• 3

Tags

NGSS.HS-PS1-2

How many bonds can hydrogen make?

• Only 1

• 1 or 2 Bonds

• 1 bond with 6 electrons on it

• It never makes bonds

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

Which Lewis Dot Model drawing correctly shows an O₂ molecule?

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