:
Carbon has three naturally occurring isotopes, "¹²C, "¹³C and "¹⁴C.
Which statement explains why the isotopes have the same chemical properties?
A They have the same number of electrons in the first shell.
B They have the same number of electrons in the outer shell.
C They have the same number of neutrons in the nucleus.
D They have the same number of protons as neutrons.
