List of practice Questions

Write the favourable factors for the formation of ionic bond.
How do you express the bond strength in terms of bond order?
Define the bond length.
Although both \(CO_2\) and \(H_2O\) are triatomic molecules, the shape of \(H_2O\) molecule is bent while that of \(CO_2\) is linear. Explain this on the basis of dipole moment.
Explain why \(BeH_2\) molecule has a zero dipole moment although the \(Be-H\) bonds are polar
Although geometries of NH3 and H2O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.
Explain the important aspects of resonance with reference to the \(CO_3^{2-}\) ion.
H3PO3 can be represented by structures 1 and 2 shown below. Can these two structures be taken as the canonical forms of the resonance hybrid representing H3PO3 ? If not, give reasons for the same.
H3PO3
Which out of NH3 and NF3 has higher dipole moment and why?
Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in \(C_2H_4\) and \(C_2H_2\) molecules.
What is the total number of sigma and pi bonds in the following molecules?
  1. \(C_2H_2\) 
  2. \(C_2H_4\)
Distinguish between a sigma and a pi bond.
What is meant by the term bond order? Calculate the bond order of: \(N_2\), \(O_2\), \(O_2^+\) and \(O_2^-\) .
Considering x-axis as the internuclear axis which out of the following will not form a sigma bond and why?