JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Analyzing +4 | -1

Assertion (A): Separation of

{Zr}

and

{Hf}

is difficult.

Reason (R): Because

{Zr}

and

{Hf}

lie in the same group of the periodic table.

View answer and explanation

Correct option: B

Both A and R are true but R is not the correct explanation of A

The correct answer is B (Both A and R are true but R is not the correct explanation of A) because while both statements are true, the difficulty in separating Zr and Hf is due to their similar ionic radii, not just their group placement.

More Questions from d & f- BLOCK ELEMENTS

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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