Question

Which element is more metallic between Ba and Ca? Give reason

Answer 1

Explanation:

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.

Answer 2

Calcium is more metallic than Barium .

Because calcium has 2 valence electrons.

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