Question

2. Complete the table:
Identify Dobereiner's triads from the following group of elements having
similar chemical properties and complete the table given below:
Whether
Atomic mass of Dobereiner's
middle element triad or not?
Sr.no
Triads
by calculation
Why?
1. Mg(24.3), Ca(10.1),Sr(87.6)
2 S(32.1), Se(79.0), Te(127.6)
3 Be(9.0), Mg(24.3), Ca(40.1)​

Answer 1

Answer:

1) No. Because sum of other too elements is not equal to middle element.

2) No. Because sum of other too elements is not equal to middle element.

3) No. Because sum of other too elements is not equal to middle element.