The value of 'x' in NH42FeSO4x.6H2O is

1.  1

2.  2

3. 3

4.  4

Subtopic:  Introduction to Redox and Oxidation Number |
 57%
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The correct structure of ClF3is

1.  

2.  

3.  

4.  

Subtopic:  Hybridisation |
 82%
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Select the correct statement regarding XeO2F2 among the folowing.

a.  Xe is sp3d hybridised.

b.  4 bond pairs and 1 lone pair are present around Xe.

c.  Shape of XeO2F2 is square pyramidal.

d.  Contains pπ- bonds.

1.  a and b

2.  a, b and d

3.  a and d

4.  b, c and d

Subtopic:  Hybridisation |
 71%
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Consider the following compound,

LiCl, BeF2, BCl3, IF7, CH4, SF6, PCl5

The total number of compounds having expanded octet around the central atom are:

1.  2

2.  4

3.  5

4.  3

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 78%
From NCERT
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Which of the following atomic orbitals will show zero overlaps? (consider x-axis as the molecular axis)

1.  Px, Px

2.  Py, Py

3.  Py, Pz

4.  Px, s

Subtopic:  Covalent Bond |
 77%
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Which of the following correctly orders the lattice energies of NaCl, NaF, KCl, and RbCl from weakest to strongest?

1.  KCl < RbCl < NaCl < NaF

2.  NaF < NaCl < KCl < RbCl

3.  RbCl < KCl < NaCl < NaF

4.  NaCl < RbCl < NaF < KCl

Subtopic:  Lattice & Hydration Energy |
 79%
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Which of the following molecules has the maximum covalent character?

1. NaH

2. Na2S

3. CaCl2

4. SnCl4

Subtopic:  Covalent Bond |
 71%
From NCERT
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The species in which the central atom uses sp2 hybrid orbitals is

1.  PH3

2.  NH3

3.  CH3+

4.  SbH3

Subtopic:  Hybridisation |
 89%
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Which of the following contain a maximum number of electrons in the antibonding molecular orbitals?

1. \(O^{2-}_2\) 2. \(O_2\)
3. \(O^{-}_2\) 4. \(O^{+}_2\)
Subtopic:  M.O.T |
 78%
From NCERT
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The bond order for a species with the configuration σ1s2σ*1s2σ2s2σ*2s2σρ1x will be:

1.  1

2.  12

3.  Zero

4.  \(\frac{3}{2}\)

Subtopic:  M.O.T |
 86%
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