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If the three elements X,Y,Z form Dobereiner’s triad and the Atomic Masses of X and Z are 16 and 46 respectively, then the Atomic Mass of Y will be:

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answer is C.

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Detailed Solution

According to Dobereiner’s triad, the elements with similar properties are arranged in increasing order of their Atomic Masses, where the Atomic Mass of the middle element of the triad is the average of the other two elements on both sides.

Here, given that the Atomic Mass of X is 16 and the Atomic Mass of Z is 46.

So, the average of 16 and 46 is 31, which will be the Atomic Mass of Y.
Hence, the correct answer is 31.

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