Periodic Table Review

How do you determine the number of protons of an element?

• Atomic number
• Atomic mass
• Atomic number-atomic mass

If Lithium has an atomic number of 3 and an atomic mass of 6.94, how many protons does Lithium have?

• 3
• 4
• 7
• 10

How do you determine the number of electrons of an element?

• Atomic number
• Atomic mass
• Atomic mass- atomic number
• Group number

If Oxygen has an atomic number of 8 and an atomic mass of 15.999, how many electrons does Oxygen have?

• 8
• 15
• 16
• 24

If Helium has an atomic number of 2 and an atomic number of 4.00, how many electrons does Helium have?

• 2
• 4
• 6
• 8

How do you determine the number of neutrons of an element?

• Atomic number
• Atomic mass
• Atomic mass- atomic number
• Group number

How many neutrons does Beryllium have? It has an atomic number of 4 and an atomic mass of 9.01. 

• 4
• 5
• 9
• 13

If Magnesium has an atomic number of 12 and an atomic mass of 24.31, how many neutrons does it have?

• 12
• 12.31
• 24
• 36

How do you determine the valence electrons of an element?

• Atomic number
• Atomic mass
• Atomic mass- atomic number
• Group number

Neon is in group 18. How many valence electrons does it have?

• 1
• 8
• 18