1.

Identify Dobereiner's triads from the following groups of elements having similar chemical properties? Mg (24.3), Ca (40.1), Sr (87.6)

Answer»

SOLUTION :Mg (24.3), (b) Ca (40.1), (c) Sr (87.6)
`:.` Mean of `(a+c)/2= 111.90/2=55.95`
which is not approximately equal to the atomic MASS of middle element (Ca). THEREFORE, it does not form Dobereiner.s TRIADS.


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