An ion having  the shortest bond length among the following is -

1. O2+

2. O2-

3. O22-

4. O22+

Subtopic:  M.O.T |
 80%
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Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B2 is:

1. 1 and diamagnetic 2. 0 and diamagnetic
3. 1 and paramagnetic 4. 0 and paramagnetic

Subtopic:  M.O.T |
 51%
From NCERT
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The species having pyramidal shape is:

(1) SO3

(2) BrF3

(3) SiO32-

(4) OSF2

Subtopic:  Hybridisation |
 56%
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Among the following the maximum covalent character is shown by the compound:

(1) FeCl2

(2) SnCl2

(3) AlCl3

(4) MgCl2

Subtopic:  Covalent Bond |
 70%
From NCERT
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Which of the following statement is wrong?

(1) The stability of hydrides increase from NH3 to BiH3 is group 15 of the periodic table.

(2) Nitrogen cannot form dπ- bond.

(3) Single N-N bond is weaker than the single P-P bond.

(4) N2O4 has four resonance structure

Subtopic:  Types of Chemical Bond |
 53%
From NCERT
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The structure of IF7 is

(1) square pyramid

(2) trigonal bipyramid

(3) octahedral

(4) pentagonal bipyramid

Subtopic:  Hybridisation |
 87%
From NCERT
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In which of the following pairs the two species are not isostructural?

(1) PCl4+ and SiCl4

(2) PF5 and BrF5

(3) AlF63- and SF6

(4) CO32- and NO3-

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
 76%
From NCERT
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In allene (C3H4),  the type(s) of hybridization of the carbon atoms is (are):

1. sp and sp3

2.  sp and sp2

3. only sp2

4.  sp2 and sp3

Subtopic:  Hybridisation |
 66%
From NCERT
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The shape of XeO2F2 molecule is:

(1) trigonal bipyramidal

(2) square planar

(3) tetrahedral 

(4) see-saw

Subtopic:  Hybridisation |
 67%
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How many number of water molecule (s) directly bonded to the metal centre in CuSO4 . 5H2O is

(1) 3

(2) 2

(3) 4

(4) 5

Subtopic:  Types of Chemical Bond |
 64%
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