Question

The 100th element is named in the honor of:
(A) Einstein
(B) Bohr
(C) Fermi
(D) Curie

Answer 1

Hint: To get the idea of the question, we should know the name of the element that has atomic number 100. It will be great for us if we know the position (-along the period and in the group) of the element in the periodic table.

Complete step by step answer:
Atomic number 100 is assigned to the element named Fermium. This element belongs to f- block elements and is part of the actinide series. It is located in group3 and in the 7th period of the periodic table. A nuclear physicist from Italy, named Enrico Fermi discovered it during the explosion of the first hydrogen bomb in the year 1952 this explosion is known as ‘Ivy Mike’ nuclear test. It has two stable isotopes, named Fermium-253 and Fermium-257. So fermium was the title given to the 100th element of the periodic table.
Hence, option C. Fermi is the correct option to the given answer.

Additional information
Its atomic mass is 257u. It has an electronic configuration 2, 8, 18, 32, 30, 8, 2. In higher classes, we use to write it as $ \left[ {Rn} \right]5{f^{12}}7{s^2} $ . Oxidation states are +2 and +3.

Note:
The element Fermium is not found in nature till date and is synthetically manufactured by nuclear bombardment of plutonium $ (Pu) $ by a long series of neutron capture reactions. $ Pu $ is a radioactive element with atomic number 94.