Q.
Assertion (A) Mendeleev's left the gap under aluminium and silicon and called these Eka-aluminium and Eka-silicon, respectively.Reason (R) Dobereiner arranged elements on the basis of increasing atomic number.
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a
Both A and R are correct; R is the correct explanation of A.
b
Both A and R are correct; and R is not the correct explanation of A.
c
A is correct; R is incorrect.
d
R is correct; A is incorrect.
answer is C.
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Detailed Solution
Dobereiner arranged elements on the basis of increasing atomic weights
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