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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Analyzing +4 | -1

A transition metal

\mathrm{M}

can exist in two oxidation states +1 and +2 . It forms a sulphide whose experimental formula is given by

\mathrm{M}_{\mathrm{x}} \mathrm{S}

where

2 > x > 1

. Then the ratio of metal ion in +1 state to those in +2 state in sulphide is given by

View answer and explanation

Correct option: B

\frac{2(x-1)}{2-x}

Option B is correct. The ratio of metal ions in +1 to +2 oxidation states is derived using charge neutrality principles in the compound M_xS.

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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}

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