Understanding Nuclear Symbols

What are the three components of a nuclear symbol?

• Element symbol, atomic number, and electron configuration

• Element symbol, atomic number, and mass number

• Element symbol, mass number, and electron count

• Element symbol, neutron number, and atomic mass

How can you calculate the number of neutrons in an isotope?

• Multiply the atomic number by the mass number

• Subtract the atomic number from the mass number

• Divide the mass number by the atomic number

• Add the atomic number to the mass number

For a carbon isotope with a mass number of 14, how many neutrons does it have?

• 12

• 14

• 8

• 6

What is the atomic number of hydrogen?

• 1

• 4

• 2

• 3

What is the name of the isotope with 13 protons and a mass number of 27?

• Aluminum-27

• Aluminum-13

• Potassium-27

• Potassium-13

How many neutrons are in potassium-40?

• 19

• 21

• 20

• 40

What is the mass number of gold-198?

• 119

• 79

• 198

• 198.79

Which element has an atomic number of 20?

• Potassium

• Calcium

• Barium

• Sodium

If an isotope of sodium has 11 protons and 13 neutrons, what is its mass number?

• 11

• 13

• 24

• 22

How many protons does barium-139 have?

• 83

• 56

• 139

• 112