Valence Electrons Do Now

Valence electrons are electrons in the shell

• furthest from the nucleus

• closest to the nucleus

• having the lowest energy level

• that has the fastest electrons

Choose the correct number of valence electrons for Barium

• 1

• 2

• 3

• 4

How many valence electrons in Oxygen?

• 5

• 6

• 7

• 8

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

• 1

• 2

• 8

• 18

Tags

NGSS.HS-PS1-1

What is the charge of a Francium cation?

• 0

• +1

• +2

• -1

Ions are

• atoms that have gained or lost a proton

• atoms that have gained or lost a neutron

• atoms that have gained or lost an electron

• any atom

Cations have a __________ charge, anions have a _____________ charge.

• positive, negative

• negative, positive

• negative, neutral

• neutral, positive

How many valence electrons does Lithium have?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does Neon have?

• 18
• 8
• 10
• 2

Tags

NGSS.HS-PS1-1

How many valence electrons does Helium have?

• 1

• 2

• 3

• 8

Tags

NGSS.HS-PS1-1