The answer would be
35 ============= > A CL = ============> CL 17 === = ======== >Z
37 CL 17 Isotopes mean A different and equal Z.
Isotopes are atoms that have the same number of protons but a different number of neutrons but still belong to the same element. Though they have the same atomic number but not the same mass number.
C. It is a reaction to emotion but not to maintain stability.
Their should be two molecules of hydrogen (h2) to produce 2 moles of h2O2
