Fill in the blanks in the following statements : (a) The horizontal rows ____ (b) In going across a period (right to left) in periodic table, the atomic size of the atom _______ (c) On moving from right to left in the second period, the number of valence electrons _______ (d) On going down in a group in the periodic table, the metallic character of elements _______ (e) The tendency to gain an electron ______ on moving down in a group of the periodic table.

Question

Philoid · Accepted Answer

(a) Periods

The horizontal rows are the periods.

(b) Increases

In going across a period (right to left) in periodic table, the atomic size of the atom increases.

(c)decreases

On moving from right to left in the second period, the number of valence electrons decreases.

(d) On going down in a group in the periodic table, the metallic character of elements increases.

(e)The tendency to gain an electron decreases on moving down in a group of the periodic table.