AlCl3 + Cl-  AlCl4-

The change in the hybridization of the Al atom in the above reaction is-
1. \(s p^{2} \text { to } s p^{3}\)
2. \(\mathrm{sp}^{3} \text { to } s p^{2}\)
3. \(\mathrm{sp}^{3} \text { to } \mathrm{dsp}{ }^{2}\)
4. \(\operatorname{sp}^{2} \text { to } d s p^{2}\)

Subtopic:  Hybridisation |
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Considering the X-axis as the internuclear axis, a sigma bond will not be formed in:

1. 1s and 2s2. 1s and 2px3. 2py and 2py4. 1s and 1s

Subtopic:  Hybridisation |
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In the option are given sequences of increasing bond order for the following species. The correct option is :

O2 , N2 , O2+ and O2- is -

1. O2 > N2 > O2+ > O2-2. O2- > O2 > O2 + > N23. N2 > O2+ >O2 >O2-4. O2- > O2+ > O2 > N2

Subtopic:  M.O.T |
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What does the plus and negative sign of the orbitals mean?

1. Wave function.

2. Probability density.

3. Quantum number of orbitals.

4. Frequency of orbitals.

Subtopic:  M.O.T |
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The relative order of stability of the following species: O2 , O2 + , O2- and O22-  is -

1. O2+ > O2> O2- > O22- 2. O22->O2 > O2- > O2+3. O2 > O2+  > O2- > O22-4. O2 > O22- >O2- > O2+

Subtopic:  M.O.T |
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The incorrect statement about NH3 and H2O is -

1. The bond angle in NH3 is less than in H2O.

2. Both have distorted tetrahedral geometries.

3. The bond angle in H2O is less than in NH3.

4. Both are sp3 hybridized. 

Subtopic:  Hybridisation |
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The shape of  AsF5 is -

1. Pentagonal bipyramidal.

2. Trigonal bipyramidal.

3. Distorted tetrahedral.

4. Square pyramidal.

Subtopic:  V.S.E.P.R & V.B.T |
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The reason of an atom behind the formation of a chemical bond is -

1. To increase the size.

2. To decrease size.

3. To attain stability.

4. None of the above.

Subtopic:  Covalent Bond |
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The Lewis dot symbols for atoms of the elements Mg, Na, O, and N, respectively, would be:

1. ,    ,

2.  

3. 

4.  

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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Lewis symbols for the atoms and ions: S and S2–; Al and Al3+; H and H respectively, would be:

1. :S....:2-Al3+,  , ,

2. , :S....:2-, , Al3+,

3. :S....:2-, , Al3+,

4. , :S....:2-,Al3+,

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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