Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

a. How does valency vary in a group on going from top to bottom?

b. How does the number of valence electrons vary in a period on going from left to right and from top to bottom in a group?

Asked by Topperlearning User 28th May 2014, 8:36 AM
Answered by Expert
Answer:

(a) Valency remains same on moving from top to bottom in a particular group. This is because the outermost electronic configuration of all the elements in a group remains same.

(b) On moving from left to right in a period, the number of valence electrons in elements increases from 1 to 8. The elements in a period have consecutive atomic numbers.

On moving down a group in the periodic table, the number of valence electrons in the elements remains the same.

Answered by Expert 28th May 2014, 10:36 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Latest Questions

CBSE XII Commerce Accountancy
Asked by Mannusingh1247 21st April 2018, 10:15 PM
CBSE XII Science Biology Sexual Reproduction in Flowering Plants
Asked by gargimoitreyee 21st April 2018, 8:31 PM
CBSE X Physics
Asked by aahnik.mohanty 21st April 2018, 7:29 PM