Q.

If the two members of a Dobereiner triad are chlorine and iodine, the third member is

Easy

Unlock the Full Solution and Master the Concept

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya

a

fluorine

b

bromine

c

sodium

d

calcium

answer is B.

(Detailed Solution Below)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

The triad is Cl, Br and I.

According to Dobereiner, the atomic mass of the middle element is nearly equal to the arithmetic mean of the other two. 

Therefore, the atomic mass of the third element is =35.5+1272=81.25 which is the atomic mass of bromine.

ctaimg
Choose your Grade and Exam
edit icon

Connect with our

Expert Counsellors

access to India's best teachers with a record of producing top rankers year on year.

+91

We will send a verification code via OTP.

whats app icon