CH-1149

Isotopes

Chemistry · Secondary 4 · Medium · Isotopes

A sample of chlorine gas contains two isotopes,

^{35}\text{Cl}

and

^{37}\text{Cl}

. How do atoms of these two isotopes differ?

They have different numbers of neutrons but the same number of protons.
They have different numbers of protons but the same number of neutrons.
They have different numbers of electrons but the same number of protons.
They have different numbers of protons and electrons but the same number of neutrons.

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