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In Dobereiner’S Triad Containing Li, Na, K, If Atomic Masses of Lithium and Potassium Are 6.9 and 39.1, Then What Will Be the Atomic Mass of Sodium? - Science and Technology 1

In Dobereiner’s triad containing Li, Na, K, if atomic masses of Lithium & Potassium are 6.9 and 39.1, then what will be the atomic mass of Sodium?

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Solution

According to Dobereiner’s triad rule :
Atomic Mass of Sodium = `(6.9+39.1)/2 = 23`

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