The bond having the highest bond energy is :

(a) C=C 

(b) C=S

(c) C=O

(d) P=N

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H.O.M.O. (Highest Occupied Molecular Orbital) of CO molecular is :

(a) Non-bonding M.O. with slight antibonding character

(b) Non-bonding M.O. with slight bonding character

(c) Pure non-bonding M.O.

(d) None of the above

Concept Questions :-

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Incorrect match is:

Electron geometry                                 Possible molecular shape from respective electron                                                                                                              geometery 

(a) Tetrahadron                                       -           Bent

(b) Trigonal bipyramidal                           -           Traingular planar

(c) Octahedron                                        -           Square Pyramidal

(d) Pentagonal bipyramidal                      -            Pentagonal planar

Concept Questions :-

Lattice/Hydration Energy
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In which of the following species central atom is NOT surrounded by exactly 8 valence electrons?

(a) BF4-

(b) NCl3

(c) PCl4+

(d) SF4

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The structure of B3N3H6 is as follows :

                                

How many derivative structures of B3N3H4X2 can be derived from the basic structure, by the

replacement of two hydrogen atoms?

(a) 2                                         (b) 3

(c) 4                                         (d) 5    

Concept Questions :-

Hybridisation
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Correctly match is :

(a) dx2-y2 atomic orbital                                    One nodal plane 

(b) Py atomic orbital                                          Two nodal plane 

(c) σpx                                                              ψ (gerade)

(d) Ppy                                                              ψ (ungerade)

Concept Questions :-

Covalent Bonding
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In which of the following molecular shape dz2- orbital must not be involved in bonding?

(a) Pentagonal planar 

(b) Trigonal planar 

(c) Linear 

(d) Square planar

Concept Questions :-

Hybridisation
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Consider the following reaction:

MX4+X'2MX4X'2

If atomic number of M is 52 and X and X' are halogens and X' is more electronegative than X.

Then choose correct statement regarding given information:

(a) Both X' atoms occupy axial positions which are formed by overlapping of p and d-orbitals only

(b) All MX bond lengths are identical in both MX4 and MX4X'2 compounds

(c) Central atom 'M' does not use anyone valence non-axial set of d-orbital in hybridization of final product

(d) Hybridization of central atom 'M' remains same in both reactant and final product.

Concept Questions :-

Hybridisation
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Which atom can have more than eight valence electrons when it is forming covalent bond?

(a) H

(b) N

(c) F

(d) Cl

Concept Questions :-

Types of Bonding
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Select the incorrect match:

        Statement                               Shape                                    Example

(a) Bond pair has > 75%                                                 HF

p-character

(b) Reduction in axial bond                                     SF4

is more than that of in 

equatorial bond angle

(c) Two axial d-orbitals and                                       XeF5-

one non-axial d-orbitals are

used in hybridization

(d) Two p-orbitals are used                                               SnCl2

in hybridization

Concept Questions :-

Hybridisation
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Difficulty Level: