Valence electrons and Lewis dots structures

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

• 2

• 8

• 6

• 18

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

This is a correct dot diagram for nitrogen (N)

• true

• false

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NGSS.HS-PS1-1

What are valence electrons?

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 2
• 8
• 3
• 13

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

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NGSS.HS-PS1-1

How many valence electrons are found in atoms of group 1?

• 7
• 6
• 4
• 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

Tags

NGSS.HS-PS1-1

Which elements have the most similar chemical properties?

• boron and carbon

• oxygen and sulfur

• aluminum and bromine

• argon and silicon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a stable atom the amount of electrons is equal to the number of:

• neutrons

• protons

• atomic mass

• neutrons + protons

Tags

NGSS.MS-PS1-1

How many valence electrons does Aluminum Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

Tags

NGSS.HS-PS1-1