Question

who is Johann wolfgang​

Answer 1

Answer:

Johann Wolfang Döbereiner was the first one to attempt classifying the elements known at that time...

He did so by arranging few of these elements in the form of triads..

He found that the arithmetic mean of the atomic masses of the first and last element was roughly equal to the atomic mass of the third....

For more info..inbox me or just refer to the ncert science tb class 10...

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