Covalent Structure Model

A covalent bond forms between the atoms of:

• a metal and a non-metal

• a metal and another metal

• a non-metal and another non-metal

• all atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many atoms of sulfur are in each molecule of H₂SO₄?

• 1

• 4

• 2

• 7

Tags

NGSS.MS-PS1-1

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

• 2
• 8
• 6
• 18

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

• 4
• 6
• 8
• 2

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for oxygen (O)

• Yes. Oxygen has 4 valence electrons

• No. Oxygen should have 8 valence electrons

• No. Oxygen should have 6 valence electrons

• No. Oxygen should have 2 valence electrons

Tags

NGSS.HS-PS1-1

Three pairs of electrons are shared in a

• Single bond

• Double bond

• Triple bond

• Ionic bond

Tags

NGSS.HS-PS1-1

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

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

What is the correct Lewis Structure for ammonia NH₃

• 
• 
• 
• 

What would the molecular formula be for a molecule made up of N and H

• NH₃

• NH₄

• N₃H

• 3NH

What type of bond exists between the carbons in C₂H₄?

• None

• Single bond

• Double bond

• Triple bond