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

• 2
• 8
• 6
• 18

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• 4
• 6
• 8
• 2

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

What is a double bond?

• a bond between two atoms

• one pair of electrons shared between two atoms

• two pairs of electrons shared between two atoms

• three pairs of electrons shared between two atoms

Tags

NGSS.HS-PS1-1

Covalent compounds

• Share electrons
• transfer electrons
• contain a sea of electrons
• conduct electricity

Tags

NGSS.HS-PS1-1

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal & 1 Metal
• 2 Metals
• 2 Noble Gases

The number of bonds an element will form in a covalent compound will be equal to

• the number of valence electrons
• eight electrons
• the number of electrons needed to reach an octet
• the group number

Which element below is not diatomic?

• hydrogen

• oxygen

• nitrogen

• sulfur

What would you name this molecule?

• SNa3
• H3O
• NaCl
• H2O

Tags

NGSS.MS-PS1-1

In a covalent bond, one or more electrons are? 

• shared 
• lost 
• gained 
• transferred