Which factors are responsible for the increase in metallic character down a group in the periodic table?
Decreasing ionization energy and increasing atomic size
Metallic character depends on how easily an atom loses its outermost electrons to form positive ions.
Moving down a group, additional electron shells increase the atomic size, which weakens the nucleus's hold on the outer electrons.
This reduces the ionization energy, making it easier to remove electrons, which in turn increases the metallic character.
Hence, decreasing ionization energy together with increasing atomic size explains the increase in metallic character down a group.
Why do noble gases exist as gases at room temperature, while halogens exist as solids, liquids, or gases down the group?
What is the valency of Lithium?
The maximum number of electrons that can be accommodated in the outermost orbit is _______.
If the atomic size increases, the nonmetallic character will
State the electronic configuration of Argon.
The ore of aluminium ‘bauxite’ is: