JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Hard

1 of 1

Analyzing +4 | -1

Assertion : Actinides show much higher range of oxidation states

Reason : Energy difference between 5f and 6d orbitals is large

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Correct option: C

If Assertion is True but the Reason is False.

Option C is correct. Actinides exhibit a wider range of oxidation states due to smaller energy differences between 5f, 6d, and 7s orbitals, not a large difference as stated in the reason.

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Mercury is transported in metal containers made of: Cadmipone is a mixture of: The number of element from the following that do not belong to lanthanoids is :
Eu, Cm, Er, Tb, Yb and Lu Statement-I:

{Sm}^{3+}

{Dy}^{3+}

have same colour (yellow).

Statement-II: Both ions are having same number of unpaired electrons. The most common oxidation state of Lanthanoid
elements is +3. Which of the following is likely to
also form other oxidation state? A mixture of

\mathrm{Ti}{\mathrm{O}_2}

and

\mathrm{BaS}{\mathrm{O}_4}

is called