WorksheetsFUN WITH CHEMICAL BONDS AND STRUCTURES
Total questions: 15
Worksheet time: 7mins
Q.1. MX6 is a molecule with octahedral geometry. How many X – M – X bonds are at 180°?
one
two
three
none
Q.2. During the formation of a chemical bond
energy decreases
energy increases
remains same
electron electron repulsion becomes more than electron nucleus attraction
Q.3. The structure of IF7 is
Pentagonal bipyramidal
Square pyramid
Trigonal bipyramid
Octahedral
Q.4. Isostructural species are those which have the same shape and hybridization. Among the given species identify them:
[NF3 and BF3]
[BF4–and NH4+ ]
[BCl3 and BrCl3]
[NH3 and NO3– ]
Q.5. In PO4 3– ion the formal charge on the oxygen atom of P–O bond is
+1
-1
-0.75
+0.75
Q.6. He2 is not stable but He2 + is expected to exist. (Hint : calculate bond order of both)
True
False
Q.7. Arrange the following in increasing order of their bond strength : O2, N3, Cl2, CO
CO, N3, Cl2, O2
N2, CO, O2, Cl2
N2,O2,CO,Cl2
Cl2,O2,N2,CO
Q.8. Amongst the following elements, the one having the highest ionization is :
[Ne]3s2 3p1
[Ne]3s2 3p3
[Ne]3s2 3p2
[Ar]3d104s2 4p3
Q.9. Stable form of C may be represented by the formula C2
True
False
Q.10. Identify the hybridisation in the figure shown:
sp3d
sp3d3
sp3d2
sp3
The type of hybrid orbitals of nitrogen in figure shown is expected to be:
sp3d
sp
sp2
sp3
Q.12. Identify the shape of NH3 :
Q.13. Arrange the following in decreasing order of dipole moment : HI, HBr, HCl, H2, HF
HF>HCl>HBr>HI>H2
HF<HCl<HBr<HI<H2
HCl>HI>HBr>H2
H2>HI>HBr>HCl>HF
Q.14. Which among the following pairs do not obey octet rule :
H2O, O3
O3, CH4
H2O, CCl4
SF6, BCl3
Q.15. Magnitude of hydrogen bonding is maximum in :
