Lewis dot structures

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

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for nitrogen (N)

• true

• false

Tags

NGSS.MS-PS1-1

This is a correct dot diagram for carbon (C)

• true

• false

Tags

NGSS.MS-PS1-1

This is a correct dot diagram for magnesium (Mg)

• true

• false

Tags

NGSS.HS-PS1-1

This is a correct dot diagram for neon (Ne)

• true

• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!

• noble gases

• transition

• halogens

• borons

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

• O

• B

• Li

• Ne

Tags

NGSS.HS-PS1-1

What's a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number

• electrons in the first level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How are electrons arranged in an atom?

• In groups of five

• In energy levels

• By color

• By shape

Tags

NGSS.HS-PS1-1