Which of the following would have a permanent dipole moment ?

(1) BF3

(2) SiF4

(3) SF4

(4) XeF4

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In the case of alkali metals, the covalent character decreases in the order

(1) MCl > MI > MBr > MF

(2) MF > MCl >  MBr > M

(3)MF > MCl > MI > MBr

(4) MI > MBr > MCl > MF

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Which of the following two are isostructural? 

(1)XeF2, and IF2-

(2)NH3, and BF3

(3)CO2, and SiO2

(4)PCl5, and IF5

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Types of Bonding
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Which one of the following species does not exist?

(1) Be2+

(2) Be2

(3) B2

(4) N2

 

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Which one of the following is not paramagnetic ?

1. NO

2. N2+

3. CO

4. O2-

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In a regular octahedral molecule, MX6 the number of X-M-X bonds at 180°is

(1) 3

(2) 2

(3) 6

(4) 4

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Hybridisation
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Which of the following is not isostructural with SiCl4

(1) SCl4     

(2) SO42-

(3) PO43-

(4) NH4+

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Hybridisation
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In which of the following species the central atom has the type of hybridisation which is not the same as that present in the other three ?

(1) SF4

(2) I3-

(3) SbCl52-

(4) PCl5

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Hybridisation
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Which of the following has  --bonding ?

1. NO3-

2. SO32-

3. BO33-

4.CO32-

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Hybridisation
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In BrF3 molecule, the lone pairs occupy equatorial positions to minimise :

1. lone pair-bond pair repulsion

2. bond pair-bond pair repulsion

3. lone pair-lone pair repulsion and bond pair-bond pair repulsion

4. lone pair-lone pair repulsion

Concept Questions :-

Hybridisation
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