Assertion (A): Zn(ll) salts are diamagnetic.
Reason (R): Zn2+ ion has one unpaired electron.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Resonance & Nature of Compounds |
 74%
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The incorrect statements among the following are-

(a) NaCl being an ionic compound is a good conductor of electricity in the solid-state
(b) In canonical structure, there is a difference in the arrangement of atoms
(c) Hybrid orbitals form stronger bonds than pure orbitals
(d) VSEPR theory can explain the square planar geometry of XeF4
 
1. (a) and (b) only 2. (b) and (c) only
3. (c) and (d) only 4. (b) and (d) only
Subtopic:  Resonance & Nature of Compounds | V.S.E.P.R & V.B.T |
 69%
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Among the following, the correct statements about CO32

(a)

The hybridisation of the central atom is sp3

(b)

Its resonance structure has one C-O single bond and two C=O double bonds

(c)

The average formal charge on each oxygen atom is 0.67 units

(d)

All C-O bond lengths are equal

Choose the correct option :

1. (a), (b)

2. (b), (c)

3. (c), (d)

4. (b), (d)

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge | Resonance & Nature of Compounds | V.S.E.P.R & V.B.T |
 66%
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Match the items given in Column I with examples given in Column II.

Column I

Column II

A. Hydrogen bond

1. C

B. Resonance

2. LiF

C. Ionic solid

3. H2

D. Covalent solid

4. HF

5. O3

Codes

Options:  A   B   C   D 
1. 2 3 4 1
2. 1 2 3 5
3. 5 4 3 2
4. 4 5 2 1

Subtopic:  Resonance & Nature of Compounds |
 92%
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