Coordination Complexes

Q. 2. Cubic close packing (CCP) is ABC ABC type packing. The maximum number of atoms presentin one plane of this packing which are in contact with one atom are (1) 6 (2) 8 (3) 10 (4) 12

Q.

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy?

1. CaSO₄

2. BeSO₄

3. BaSO₄

4. SrSO₄

Q. Which is the most reactive alkali metal in the water

Q. 52. Co-ordinate bond is considered as sigma bond or pi bond?

Q. Bromoethane reacts with sodium metal to form hydrocarbon. The derivative is?

Q. If the ionisation energy of hydrogen atom is 160eV, find the shell having energy -40 eV.

Q.

Which one of the following combines with Fe(II) ions to form a brown complex

1. NO

2. N₂O

3. N₂O₂

4. N₂O₅

Q. Match Column I with Column II.
$\begin{array}{cc}\text{Column - I}& \text{Column - II}\\ \text{a. Chlorophyll}& \text{(P) Rhodium}\\ \text{b. Blood pigment}& \text{(Q) Cobalt}\\ \text{c. Wilkinson catalyst}& \text{(R) Calcium}\\ \text{d. Vitamin}{B}_{12}& \text{(S) Iron}\\ & \text{(T) Magnesium}\end{array}$

1. a - T; b - S; c - P; d - Q
2. a - S; b - T; c - P; d - Q
3. a - T; b - S; c - Q; d - R
4. a - T; b - Q; c - R; d - S

Q. Catalytic hydrogenation reactivity series in alkenes

Q. 67. Consider the following species: CN+, CN-, NO, CN which one of these will have the highest bond order? 1)CN+ 2)CN 3)CN- 4)NO

Q. Which pair of elements has the same characteristic chemical propertie(1) Z 13, Z = 22 (3) Z = 4, Z = 24 (2) Z =3, Z = 11 (4) Z= 2, Z 4

Q. Coordination number of $Ni$ in $\left[Ni\right(C_2{O}_4{)}_3{]}^{4-}$ is :

1. 3
2. 6
3. 4
4. 2

Q. 14. Three atoms A, B, C, crystallizes in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centres as well as the corners of the cube and C atoms are present at the face centres of the cube .Now if all the atoms are removed from the two 4-fold axis and the one two fold axis passing through the cube then what is the formula of the compound?

Q. The ferricyanide complex ion is ____

Q. Chile saltpetre is the ore of:

1. bromine
2. sodium
3. magnesium
4. iodine

Q. Q. Supposing the energy of 4th shell for hydrogen atom is -50a.u.(arbitrary unit). What would be the ionization potential- 1)50 2)800 3)15.4 4)20.8

Q. 2: Calculate number of atoms in a cubic unit cell having one atom on each corner and two afom ixamon each body diagonal

Q. In a cubic lattice if atoms are present only at all the corners and alternate face centres then the packing efficiency will be

Q. EDTA is a ligand.

1. monodentate
2. hexadentate
3. bidentate
4. tridentate

Q. in a cubic lattice if atom are present only at all the corner and alternate face centrwvthen the packing efficiency will b

Q. the ratio of close packed atoms to tetrahedral voids in cubic close packing is

Q.

The correct ground state configuration of Kr is:

1. [Ar]344

2. [Ar]344

3. [Ar]443

4. [Ar]344

Q.

The lanthanoid series starts with:

1. Cerium

2. Lutetium

3. Lawrencium

4. Thorium

Q. Calculate the number of atoms in a cubic based lattice with one atom at each corner and two atoms on each diagonal

Q. what is the difference between symmtrical and non symmtrical carbon compounds

Q. Zinc sulphide exists in two different structural forms as zinc blende (FCC) and Wurtzite (HCP). What wil the coordination number of cation and anion in both the structure struct

Q.

Which of the following configurations would you expect to have the lowest ionization energy.

a) 1s² 2s² 2p⁶.

b) 1s² 2s² 2p⁵.

c) 1s² 2s² 2p⁶ 3s^1.

Q. The compound called microcosmic salt is:

1. $N{a}_{2}HP{O}_4.2H_{2}O$
2. $Na\left(N{H}_4\right)HP{O}_4.4H_{2}O$
3. $N{a}_{2}N{H}_{4}P{O}_4.2H_{2}O$
4. $(N{H}_4{)}_{2}HP{O}_4.2H_{2}O$

Q. In coordination compounds, the hydrate isomers differ in ?

1. Coordination number of the metal atom
2. Number of water molecules as hydration
3. Both (A) and (B)
4. Number of water molecules present as ligands

Q. 307. The number and type of bonds between two boron atoms in B2 molecule :- (1) Two sigma, two pi (2) Two sigma, one pi (3) One Pi (4) One sigma, one pi