Question

-) What is the periodic trend in variation of metallic
character and the size of atom while going from Left
to Right within the period?​

Answer 1

Answer:

Explanation:

As we move from left to right in a period, the number of valence electrons increases by one at each succeeding element but the number of shells remains same. Due to this effective nuclear charge increase. More is the effective nuclear charge, more is the attraction between nuclei and electron.

Hence, the tendency of the element to lose electrons decreases, this result in decrease in metallic character.