Test 5 10.3A

How many Valance electrons does Iodine Have?

• 6
• 16
• 7
• 17

When at atom loses electrons, it becomes a(n)

• cation

• anion

• isotope

When at atom gains electrons, it becomes a(n)

• cation

• anion

• isotope

Valence electrons are: 

• Electrons farthest away from the nucleus
• Electrons closest to the nucleus
• Electrons that just come and go - they don't stay with the atom
• Electrons in the second shell

How is helium different from the other noble gases?

• It will react with other elements.
• It has 10 valence electrons.
• It has 2 valence electrons.
• It is heavier than the other noble gases.

A(n) _________ is an ion with a positive (+) charge.

• anion
• cation
• ion
• solute

A(n) _________ is an ion with a Negative (-) charge.

• anion
• cation
• ion
• solute

• Periods
• Groups

• Periods
• Groups

• energy levels
• valence electrons
• protons
• neutrons