Question
Download Solution PDFThe element ____ is in the Dobereiner triad Ca, ____ and Ba is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Sr.
Key Points
- Dobereiner was a German scientist.
- He studied as a pharmacist at Munchberg (Germany).
- In 1829, he found some groups of three-element which showed similar properties. These groups were called triads.
- In these triads, the atomic mass of the middle element was approximately the mean of the atomic masses of the other two elements.
- The first three elements were Li, Na, K.
- He arranged the elements as per their atomic masses in increasing order.
- The second triad he found was Ca, Sr, Ba.
Last updated on Jun 12, 2025
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