CBSE
Multiple Choice QuestionsIn case of heteronuclear diatomics of the type AB, where A is more electronegative than B, bonding molecular orbital resembles the character of A more than that of B. The statement
is false
is true
cannot be evaluated since data is not sufficient
is true only for certain systems
Dipole-induced dipole interactions are present in which of the following pairs?
H2O and alcohol
Cl2 and CCl4
HCl and He atoms
SiF4 and He atoms
Which of the following structure is similar to graphite?
CO
O2-
CN-
NO+
The bond angle in NF3 (102.3°) is, smaller than NH3 (107.2°). This is because of
large size of F compared to H
large size of N compared to F
opposite polarity of N in the two molecules
small size of H compared to N
The structure of XeF6 is experimentally determined to be distorted octahedron. Its structure according to VSEPR theory is
octahedron
trigonal bipyramid
pentagonal bipyramid
tetragonal bipyramid
XeF2 is isostructural with
TeF2
ICl2-
SbCl3
BaCl2
In the following electron-dot structure calculate the formal charge from left to right nitrogen atom; :
-1 , -1 , +1
-1 , +1 , -1
+1 , -1 , -1
+1 , -1 , +1
The sp3d2 hybridisation of central atom of a molecule would lead to:
square planar geometry
tetrahedral geometry
trigonal bipyramidal geometry
octahedral geometry
Which one of the following molecules contain no -bond?
CO2
H2O
SO2
NO2
Short Answer TypeWhy B2 is paramagnetic whereas C2 is dimagnetic?
