Valency is best described as:

1. Total electrons in an atom

2. Atomicity of an element

3. Oxidation number of an element

4. Combining capacity of an element

Subtopic:  Types of Chemical Bond |
 67%
Level 2: 60%+
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Compounds that have a maximum value of lattice energy among the following, is:
 

1. NaF 2. NaCl
3. NaBr 4. NaI
Subtopic:  Lattice & Hydration Energy |
 75%
Level 2: 60%+
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A compound with maximum ionic character is formed from which of the following pairs?

1. Na and I 2. Cs and F
3. Cs and I 4. Na and F
Subtopic:  Ionic Bond |
 64%
Level 2: 60%+
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The crystal lattice of electrovalent compound is composed of :

1. Atoms

2. Molecules

3. Oppositely charged ions

4. Both molecules and ions

Subtopic:  Ionic Bond |
 77%
Level 2: 60%+
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Ions are formed from neutral atoms by-

1. Loss of electrons

2. Gain of electrons

3. Sharing of electrons

4. Loss and gain of electrons

Subtopic:  Ionic Bond |
 83%
Level 1: 80%+
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Which among the following is the most covalent compound?

1. AlF3 2. AlCl3
3. AlBr3 4. AlI3
Subtopic:  Covalent Bond |
 70%
Level 2: 60%+
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The correct order of covalent bond character among
LiCl, BeCl2, BCl3 and CCl4, is:

1. LiCl < BeCl2 > BCl3 > CCl4

2. LiCl > BeCl2 < BCl3 < CCl4

3. LiCl < BeCl2 < BCl3 < CCl4

4. LiCl > BeCl2 > BCl3 > CCl4

Subtopic:  Covalent Bond |
 71%
Level 2: 60%+
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Which follows octet rule-

1. FeCl2

2. AgCl

3. CaCl2

4. CuCl

Subtopic:  Types of Chemical Bond |
 66%
Level 2: 60%+
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The type of bonds present in N2O5 are-

1. Only covalent

2. Only ionic

3. Ionic and covalent

4. Covalent and coordinate

Subtopic:  Types of Chemical Bond |
 69%
Level 2: 60%+
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Which of the following is not true according to VBT?

1. The overlapping of orbitals with unpaired electrons of opposite spins forms a covalent bond.
2. The overlapping of orbitals with unpaired electrons of the same spin forms a covalent bond.
3. The greater the extent of overlapping, the stronger the bond.
4. Overlapping takes place only in the direction of the maximum electron density of the orbital.
Subtopic:  V.S.E.P.R & V.B.T |
 72%
Level 2: 60%+
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