First slide

Modern approach of classification of elements

Question

Which one of the following is a different pair?

Easy

A

Li, Na
B

Be, Ba
C

N, As
D

O, At

Solution

'O' belongs to 16th group. ‘At’ belongs to 17th group.

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App