Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Assertion: Mendeleev periodic table had left the gap under aluminium and a gap under silicon, and called these elements Eka ‐ Aluminium and EkaSilicon.
Reason: The elements gallium and germanium were known at that time Mendeleev published his periodic table.
A
Both A and 
are true and 
is the correct explanation of 
.
are true and is the correct explanation of .
B
Both A and 
are true but 
is not the correct explanation of A.
are true but is not the correct explanation of A.
C
A is true but 
is false.
is false.
D
Both A and 
are false.
are false.
Text Solution
Verified by ExpertsThe correct answer is:
C
The elements gallium and germanium were unknown at the time Mendeleev published his periodic table.
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