How do you calculate the number of protons in an atom?

• Atomic Mass - Atomic Number

• Atomic Number

• Mass Number

• Neutrons + Electrons

What is the relationship between the number of protons and electrons in a neutral atom?

• Protons = Electrons

• Protons > Electrons

• Protons < Electrons

• Protons + Electrons = Neutrons

How do you calculate the number of neutrons in an atom?

• Atomic Number + Electrons

• Atomic Mass - Atomic Number

• Protons + Electrons

• Mass Number - Electrons

What is the atomic number of Boron?

• 6

• 5

• 11

• 10

How many neutrons are in Boron?

• 5

• 6

• 11

• 10

What is the mass number of Sodium?

• 11

• 24

• 12

• 23

What is the atomic number of Copper?

• 29

• 35

• 24

• 30

How many electrons does Yttrium (Y) have?

• 39

• 89

• 29

• 35

What is the element symbol for Thallium?

• Tl

• Tm

• Th

• Ti

What is the mass number of Lead (Pb)?

• 207

• 204

• 208

• 206