Can the following groups of elements be classified as Dobereiner's triad:
(a) Na, Si, C1
(b) Be, Mg, Ca
Atomic mass of Be-9; Na-23, Mg-24, Si-28, C1-35, Ca-40.
Justify your answer in each case.
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Answers
Answered by
7
Answer:
a) No, because all these elements do not have similar properties although the atomic mass of silicon is average of atomic masses of sodium (Na) and chlorine (Cl).
(b) Yes, because they have similar properties and the mass of magnesium (Mg) is roughly the average of the atomic mass of Be and Ca.
Hope it helps u
Answered by
3
Answer:
only b is considered as dobereiner's traid
reason:by calculation
the average of atmass of be and ca will be equal to the atmass of mg
9+40/2
=49/2
=24.5
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