Which of the following would have a permanent dipole moment ?
(1) BF3
(2) SiF4
(3) SF4
(4) XeF4
Concept Questions :-
Difficulty Level:
In the case of alkali metals, the covalent character decreases in the order
(1) MCl > MI > MBr > MF
(2) MF > MCl > MBr > MI
(3)MF > MCl > MI > MBr
(4) MI > MBr > MCl > MF
Concept Questions :-
Difficulty Level:
Which of the following two are isostructural?
(1)XeF2, and IF2-
(2)NH3, and BF3
(3)CO2, and SiO2
(4)PCl5, and IF5
Concept Questions :-
Difficulty Level:
Which one of the following species does not exist?
(1)
(2) Be2
(3) B2
(4) N2
Concept Questions :-
Difficulty Level:
Which one of the following is not paramagnetic ?
1. NO
2.
3. CO
4.
Concept Questions :-
Difficulty Level:
In a regular octahedral molecule, MX6 the number of X-M-X bonds at 180is
(1) 3
(2) 2
(3) 6
(4) 4
Concept Questions :-
Difficulty Level:
Which of the following is not isostructural with SiCl4?
(1) SCl4
(2) SO42-
(3) PO43-
(4) NH4+
Concept Questions :-
Difficulty Level:
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)
(3)
(4) PCl5
Concept Questions :-
Difficulty Level:
Which of the following has -bonding ?
1.
2.
3.
4.
Concept Questions :-
Difficulty Level:
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 :-
Difficulty Level: