Question

Not all atoms of the same element have the same mass. These atoms are called isotopes.

Which statement is true concerning oxygen-16 and oxygen-18, two common isotopes of
oxygen found in the air?

A.They have different numbers of electrons.

B.Oxygen-18 has two more protons than oxygen-16.

C.They have the same mass number.

D.They behave the same way in chemical reactions.

Answer 1

C

Step-by-step explanation:

4.They are different states of the same pure substance