Coordination Compounds Test

Result

Coordination Compounds Test - 36

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Weekly Quiz Competition

Question 1
1 / -0

IUPAC name of the Wiilkinson's catalyst $$\left[ RhCl({ P\quad Ph }_{ 3 })_{ 3 } \right] $$

A
Chlorotris (triphenylphosphine) rhodium (I)

B
Chlorotris (triphenylphosphine) rhodium (IV)

C
Chlorotris (triphenylphosphine) rhodium (0)

D
Chlorotris (triphenylphosphine) rhodium (VI)

Solution

The IUPAC name of the wilkinson's catalyst $$[RhCl(PPh_3)_3]$$ is chlorotris(triphenylphosphine)rhodium(I) because the oxidation state of Rh metal in the complex is x + (-1 x 1) + 0 = 0, implies x = + 1. hence the correct option is A.
Question 2
1 / -0

The number of chloride ions which would be precipitated, when $$CrCl_{3}.4NH_{3}$$ is treated with silver nitrate solution:

A
3

B
2

C
1

D
0

Solution

Chromium has coordination number six.
Therefore to write its formula, we will first add the maximum number of neutral elements inside the coordination sphere.

Hence, the formula is $$[Cr(NH_{3})_{4}Cl_{2}]Cl$$.

As 1 $$Cl^{-}$$ ion is available for dissociation only one $$Cl^{-}$$ ion will precipitate when it reacts with $$AgNO_{3}$$.

Hence, the correct option is (C).
Question 3
1 / -0

The structural formula of a compound is $$CH_3-CH=C=CH_2$$. The type pf hybridization at the four carbon atoms from left to right is?

A
$$sp^2, sp, sp^2, sp^3$$

B
$$sp^2, sp^3, sp^2, sp$$

C
$$sp^3, sp^2, sp, sp^2$$

D
$$sp^3, sp^2, sp^2, sp^2$$

Solution
Question 4
1 / -0

The number of geometrical isomers of the complex $$\left[ {Co{{(N{O_2})}_3}{{(N{H_3})}_3}} \right]$$ is

A
2

B
4

C
3

D
0

Solution

$$2$$ isomers i.e facial and meridional isomer.
Question 5
1 / -0

The complex $$[Pt(NH_{3})_{4}]^{2+}$$ has ......structure :

A
square planer

B
tetrahedral

C
pyramidal

D
pentagonal

Solution

As refer to the above image $$[Pt(NH_3)_4]^{2+}$$ illustrates square planar geometry as there are only $$4$$ sigma bond around platinum with no lone pairs.
Question 6
1 / -0

When $$K_{4}Fe(CN)_{6}$$ is added to $$FeCl^{3+}$$ complex compound formed is:

A
$$Fe_{3}[Fe(CN)_{6}]_{4}$$

B
$$Fe_{4}[Fe(CN)_{6}]_{3}$$

C
$$K_{2}Fe[Fe(CN)_{6}]$$

D
$$K_{2}Fe_{3}[Fe(CN)_{6}]_{2}$$

Solution
Question 7
1 / -0

The effective atomic number rules is not obeyed by

A
$$[Ni(CO)_4]$$

B
$$K_4[Fe(CN)_6]$$

C
$$K_3[Fe(CN)_6]$$

D
$$[Fe(CO)_5]$$

Solution
Question 8
1 / -0

Which of the following involves transfer of five electrons?

A
$$MnO_4^ - \to M{n^{2 + }}$$

B
$$CrO_4^{2 - } \to C{r^{3 + }}$$

C
$$MnO_4^{2 - } \to Mn{O_2}$$

D
$$C{r_2}O_7^{2 - } \to 2C{r^{3 + }}$$

Solution

$$x + 4( - 2) = - 1$$
$$x - 8 = - 1$$
$$x = + 7$$
Question 9
1 / -0

The hybrid orbital having only 20% d character

A
$$CC{l }_{ 4} $$

B
$$S{F }_{ 6} $$

C
$$S{F }_{ 4} $$

D
$$C{l }_{ 2}O $$

Solution
Question 10
1 / -0

The hybridization of S atom in $$SO^{2-}_4$$ is?

A
$$sp$$

B
$$sp^2$$

C
$$sp^3$$

D
$$sp^3d$$

Solution