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Chemistry
The correct statement is
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Q. The correct statement is
KCET
KCET 2014
The d-and f-Block Elements
A
The extent of actinoid contraction is almost the same as lanthanoid contraction.
28%
B
$Ce^{+4}$ in aqueous solution is not known.
20%
C
The earlier members of lanthanoid series resemble calcium in their chemical properties.
35%
D
In general, lanthanoids and actinoids do not show variable oxidation states
17%
Solution:
The earlier members of lanthanoid series resemble calcium in some of their chemical properties. e.g., Hydroxide of both of them are ionic and basic.