CBSE
Multiple Choice QuestionsWhich of the following ions is paramagnetic?
Cu++
Zn++
Ni++
Both 'a' and 'c'
The hybridisation of the central atom in BrF5 molecule is :
sp3
dsp2
sp3d2
d3sp3
Among the following compounds which is planar in shape is
acetylene
benzene
isobutene
methane
The AsF5 molecule is trigonal bipyramidal. The hybrid orbitals used by the As atoms for bonding are
dx2-y2, dz2, s, px, py
dxy, s, px, py, pz
dx2-y2, s, px, py
s, px, py, pz, dz2
Which of the following electronic configurations has maximum energy?
The molecule having largest dipole moment among the following is
CHI3
CH4
CHCl3
CCl4
A covalent molecule AB3 has pyramidal structure. The number of lone pair and bond pair of electrons in the molecule a respectively :
2 and 2
0 and 2
3 and 1
1 and 3
The number of σ bonds in P4O10 is:
6
16
7
17
Pick out the incorrect statement from the following :
sp hybrid orbitals are equivalent and are at an angle of 180° with each other
sp2 hybrid orbitals are equivalent and bond angle between any two of them is 120°
sp3d2 hybrid orbitals are equivalent and are oriented towards corners of a regular octahedron
dsp2 hybrid orbitals are equivalent with a bond angle of 90° between the two atoms
Which of the following has sp3 -hybridisation?
BCl3
PCl3
BeCl3
None of these
