Question

Amongst the elements B, Al, C and Si, the element having most metallic character is:

• A. Al
• B. C
• C. B
• D. Si

Answer 1

The correct option is A Al

The tendency of atoms of an element to lose electrons and form positive ion is known as electropositivity.

A more electropositive element has more metallic character.

Whether an element behaves as a metal or a non-metal is directly related to its ionization energy. The elements having low values of ionization energies are metals whereas elements having high values of ionization energies are non-metals.

Metallic character decreases across a period from left to right. On the other hand, the non-metallic character increases with increase in atomic number across a period.

On going along a group from top to bottom, the metallic character of elements increases.

Considering above variations $Al$ has the most metallic character amongst $B,Al,C$ and $Si$.

Hence, option A is correct