Valence electrons, halogen and noble gases

Valence Electrons of Magnesium

• 1

• 2

• 3

• 4

Valence electrons of Sodium

• 1

• 2

• 3

• 4

Valence Electrons of Calcium

• 1

• 2

• 3

• 4

True or False: Atoms that have a valence electrons of less than eight are not stable.

• true

• false

Electrons occupying the outermost shell of an atom

• Ions

• Cation

• Valence Electrons

• Anion

What group is the most reactive metals?

• 2

• 18

• 1

• 16

Why are halogens so reactive?

• They want to get rid of their only valance electron

• They only need one more electron

• They are non reactive, they have a full shell

Describe this element.

• Highly reactive metal
• Highly reactive nonmetal
• Stable
• Less stable non metal

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups