Question

Identify Dobereiner's triads from the following groups of
elements having similar chemical properties.
which option?

1. Mg (24.3), Ca (40.1), 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:

dear

the correct answer is option C

because according to dobernier triads

the atomicass of middle element Is.roughly average to both elements

formula

sum of two elements / 2