Topics: Inorganic Chemistry Ch 7,8,9

               Spectrum 2024-25

Topics: Inorganic Chemistry 

Ch 7,8,9

Marks:30                      Time: 1h 15 min 

Section - A

Q.No. 1 : Select and write the correct answer (any 6) [06]

i) In interhalogen compounds, which of the following halogens is never the central atom.

a. I b. Cl c. Br d. F

ii) Which of the following has one lone pair of electrons ?

a. IF3 b. ICl c. IF5 d. ClF3

iii) Among the known interhalogen compounds, the maximum number of atoms is

a. 3 b. 6 c. 7 d. 8

iv) In which of the following series all the elements are radioactive in nature

a. Lanthanides b. Actinides c. d-block elements d. s-block elements

v) Which of the following sets of ions contain only paramagnetic ions

a. Sm3⊕, Ho3⊕, Lu3⊕

b. La3⊕, Ce3⊕, Sm3⊕

c. La3⊕, Eu3⊕, Gd3⊕

d. Ce3⊕, Eu3⊕, Yb3⊕

vi) IUPAC name of the complex [Pt(en)2(SCN)2]2+ is

a. bis (ethylenediamine)dithiocyanatoplatinum (IV) ion

b. bis (ethylenediamine)dithiocyantoplatinate (IV) ion

c. dicyanatobis (ethylenediamine)platinate IV ion

d. bis (ethylenediammine)dithiocynatoplatinate (IV) ion

vii). The sum of coordination number and oxidation number of M in [M(en)2C2O4]Cl is

a. 6 b. 7 c. 9 d. 8

Q. 2 Answer the following. [04]

i)Write the formula for tetraammineplatinum (II) chloride.

ii) What is the shape of a complex in which the coordination number of central metal ion is 4?

iii) Write probable electronic configuration of chromium and copper.

iv) What is the oxidation state of xenon in the

following compounds.

XeOF4, XeO3, XeF6, XeF4, XeF2

Section - B

Attempt any Four.[5x2=10 M]

i) What is meant by ‘shielding of electrons’ in an atom?

ii) Give one example showing reducingproperty of ozone.

iii) Give two uses of chlorine. 

iv) Explain trends in ionisation enthalpies of d block elements.

v) What are strong field and weak field ligands ? Give one example of each.

vi)Write electronic configuration and two uses of neon (Z=10)

Section - C

Attempt any Two. [3x2 = 6M]

i) Describe anomalous behavior of fluorine with the other elements of group 17 with reference to a) Hydrogen bonding b) Oxidation state        c) Polyhalide ion

ii) Draw isomers in each of the following

a. Pt(NH3)2ClNO2

b. Ru(NH3)4Cl2

c. [Cr(en2)Br2]⊕

iii) Fluorine shows only -1 oxidation state while other halogens show -1, +1, +3, +5

and +7 oxidation states. Explain.

Section - D

Attempt any One. [1x4 = 4 M]

i) Cerium and Terbium behaves as good oxidising agents in +4 oxidation state.Explain.

ii) What are ligands ? What are their types ?Give one example of each type.