Assertion (A): In triad, the three elements have same gaps of atomic masses.
Reason (R): Elements in a triad have similar properties.
Answer
In the dobereiner's triads, the three elements are grouped together in such a way that the atomic mass of the middle element is the mean of the first and last element.
Thus,
- Assertion is false.
Therefore, the correct option is (d) the assertion is wrong
