Question

Consider the below statements and identify the correct answer

1. Statement 1: Dobereiner gave the law of triads.
2. Statement II: Dobereiner tried to arrange the elements with different properties into groups, having three elements each.

• A. i only
• B. i, ii
• C. All
• D. ii only

Answer 1

Answer:

A. i only

• Statement I is true because Johann Wolfgang Döbereiner, a German chemist, formulated the law of triads, which grouped elements with similar properties into sets of three.

• Statement II is false, as Döbereiner observed that certain groups of three elements had similar properties and that the atomic weight of the middle element was roughly the average of the other two elements in each triad