Explain the correct context in which the following terms are used:
a. Diprotium ,d. Dihydrogen ,c.Proton,d Hydrogen

Explanation

a. Diprotium: it is used for the correct term for `H_(2)`.
b. The term dihydrogen is used for the `H_(2)` molecules while refering to the isotopic mixture with natural abundance for `H` and `D`.
c. Proton: It is used for `H^(o+)`.
d. Hydrogen: It is used in relation to the isotopic mixture.