Question

Which of the following statement is true about periodic table? *
(1) Down the group valency increases
(2) Valency is same in the same group
(3) Valency first increase down the group then decrease
(4) None of above ​

Answer 1

Answer:

4

Explanation:

Answer 2

(2) Valency is same in the same group is the correct answer.

• Periodic table is an arrangement of chemical elements according to their atomic number. It has seven horizontal rows named periods and eighteen vertical columns named groups.
• Valency refers to number of electrons in the outermost shell.
• On moving down the group, only shells increase and number of electrons remains the same.