Question

Lithium (Li), Sodium (Na) and 'x' element from Dobereiner's tri- ads. The element'x' is - (a) Ca (b) a (c) K (d) Ba​

Answer 1

Answer:

(c) k

Explanation:

The elements lithium, sodium and potassium form a Dobereiner's triad.

The elements lithium, sodium and potassium form a Dobereiner's triad. Lithium is the first element of this triad, sodium is the middle element whereas potassium is the third element of the triad.

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