(a)Which of the atomic numers and the `IUPAC` name and sysmbol for the elements Mendelevium `(Md)` and Seaborgium `(Sg)`?
(b) What is the atomic number of the element for which both the American and Soviet scientists claimed credit for the discovery?
(c ) Refer to the problem `(b)` above, what name is given to the element by the American and Soviet scientists?

Explanation

a. i. Atomic number for Mendelevium is `101`. Its `IUPAC` name and symbol is Unnilunium `(Unu)`.
ii. Atomic number for Seaborgium is `106`. Its IUPAC name and symbol is Unnilhexium `(Unh)`.
b. Atomic number of that element is `104`.
c. The American scientist called it Rutherfordium `(Rf)` and the Soviet scientist called it Kurchatovium.
d. Actinium `(Ac)` and Protoactinium `(Pa)`.
e. Neptunium (atomic number `93`) and plutonium (atomic number `94`).