Isotope review

Isotopes of the same element have the same number of

• neutrons

• protons

• both neutrons and protons

Isotopes of the same element must have a different number of

• neutrons

• protons

• both neutrons and protons

An atom of Chlorine-37 has

• 37 protons, 37 neutrons and 37 electrons

• 17 protons, 37 neutrons and 17 electrons

• 17 protons, 20 neutrons and 37 electrons

• 17 protons, 20 neutrons and 17 electrons

What do these isotopes of carbon all have in common?

• neutrons and mass number

• atomic number and neutrons

• atomic number and electrons

• atomic number, neutrons and mass number

How many neutrons does the isotope of Lithium have?

• 8

• 4

• 3

• 5

What quantities vary between isotopes of an element?

• protons, electrons and atomic mass

• neutrons and electrons

• protons and atomic number

• neutrons and atomic mass

Which isotope has 4 neutrons?

• Li - 6

• Li - 8

• Li - 7

• they all have the same number of neutrons

Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.

• 204

• 206

• 207

• 208

What isotope would this be?

• carbon-12

• carbon-14

• oxygen-14

• silicon-14

Which of these pairs of atoms are isotopes?

• pair A

• pair B

• pair C