JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Analyzing +4 | -1

A metal which is ‘not’ affected by conc.

{\mathrm{H}_2}\mathrm{S}{\mathrm{O}_4},\mathrm{\;HN}{\mathrm{O}_3}

or alkalies forms a compound

X

. This compound

X

can be used to give a complex which finds its application for toning in photography. The metal is:

View answer and explanation

Correct option: A

Option A (Au) is correct because gold (Au) is inert to concentrated H₂SO₄, HNO₃, and alkalies, and its chloride (AuCl₃) forms a complex used in photography toning.

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