Some Important Elements MCQs with Answers

One-liner

Argon was discovered by Lord Rayleigh (Raleigh) and Sir William Ramsay in 1894.

One-liner

Zinc (Zn) is a trace element, while carbon, hydrogen, and oxygen are major bioelements in living organisms.

One-liner

Metalloids are unique because they have properties between metals and nonmetals.

One-liner

The atomic mass of aluminium is 27 amu (atomic mass units).

One-liner

The chemical symbol of Copper is Cu, derived from its Latin name *Cuprum*.

One-liner

Germanium and silicon are tetravalent, meaning each atom has four valence electrons in its outermost shell.

One-liner

Rhombic sulphur and monoclinic sulphur co-exist at 95.5°C, which is the transition temperature between these two allotropic forms of sulphur.

One-liner

The element with electronic configuration [Kr] 5s² 4d² is Zirconium (Zr), which has atomic number 40.

One-liner

Inert gases (noble gases) have the highest ionization energy among all elements due to their stable, fully filled electron configurations.

One-liner

Francium has the lowest electronegativity among all elements.