Question

How does the metallic character of elements vary on moving (i) from left to right in a period, and (ii) down a group? Give reason to justify your answers

Answer 1

down to group metallic character increase because atomic size increase and it easily loose electrons moving left to right metallic character decrease bcz atomic size not increase. in between periodic table there is metalloids and in 17group non metals is present

Answer 2

(1) Metallic character decreases on moving left to right in a period.

Reason: Along the period,from left to right,the effective nuclear charge increases due to increase in number of protons due to which force of attraction between nucleus and valence electrons increases and ability to lose electrons (i.e metallic character) decreases.

(ii)Metallic character increases down a group.

Reason: Because atomic size increases down a group, the force of attraction between nucleus and valence electrons decreases and electrons losing tendency increases. Therefore metallic character increases.