Physics, asked by Brahmmi7307, 7 months ago

. Three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called

Answers

Answered by hitansuhalder14756

3

Answer:

Dobereiner's triad

Explanation:

lithium,sodim and potassium has mass of 7,23 and 39 respectively. Weight of sodium is the average of lithium and potassium

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