Atomic Number, Mass Number, and Isotopes Quiz

What is the atomic number of hydrogen?

• 0

• 2

• 1

• 3

What is the mass number of protium?

• 1

• 2

• 3

• 4

Which isotope of hydrogen has one neutron?

• Deuterium

• Tritium

• Protium

• None

How many protons does carbon-12 have?

• 14

• 12

• 6

• 13

What is the mass number of tritium?

• 4

• 1

• 2

• 3

What is the symbol for the atomic number?

• M

• N

• Z

• A

How many neutrons are in carbon-13?

• 6

• 7

• 9

• 8

What is the combined number of protons and neutrons called?

• Isotope number

• Mass number

• Electron number

• Atomic number

Which element has the atomic number 92?

• Carbon

• Mercury

• Uranium

• Hydrogen

How many neutrons are in uranium-235?

• 147

• 235

• 143

• 92