Bond Parameters

${\text{C}\text{H}}_2=\text{CH}-\text{C}\text{H}=\text{C}\text{H}-{\text{CH}}_3$ is more stable than ${\text{CH}}_3-\text{CH}=\text{C}=\text{CH}-{\text{CH}}_3$ because

Assuming the bond direction to be $\mathrm{Z}-$axis, which of the overlapping of atomic orbitals of two atoms $\mathrm{A} \mathrm{and} \mathrm{B}$ will be result in bonding:

 $\left(\mathrm{I}\right)$s orbital of $\mathrm{A}$ and ${\mathrm{p}}_{\mathrm{x}}$  orbital of $\mathrm{B}$

$\left(\mathrm{II}\right)$ s orbital of $\mathrm{A}$ and ${\mathrm{p}}_{\mathrm{z}}$ orbital of $\mathrm{B}$

$\left(\mathrm{III}\right) {\mathrm{p}}_{\mathrm{y} }$orbital of $\mathrm{A}$and ${\mathrm{p}}_{\mathrm{z}}$ orbital of $\mathrm{B}$

$\left(\mathrm{IV}\right)$s- orbitals of $\mathrm{A} \mathrm{and} \mathrm{B}$

In which of the following compounds resonance does not occurs :

(a) ${\mathrm{H}}_2\mathrm{O}$        (b) ${\mathrm{SiO}}_2$            (c) ${\mathrm{SO}}_3$         (d) ${\mathrm{CO}}_2$

Which of the following compounds are dipolar?

Why is covalent character directly proportional to polarising power?

Explain why cation are smaller and anions larger in radii than their parent atoms?

The size of cation is smaller than its parent atom. Why?

Write the electronic configuration of calcium.

Dispel some misconceptions associated with resonance?

Write the difference between Resonance and isomerism.

Explain the structure of ${\mathrm{CO}}_3^{2-}$ions in terms of resonance.

What exactly is described by the canonical structure or resonance structures of the hybrid?

Why do we need to draw resonating structures for a molecule?

Discuss the necessary condition for resonance.

Which of the following compounds is polar ?

Is it possible for the non-polar molecules to have polar bonds?

Explain why :

$\mathrm{H}-\mathrm{F}$ is more polar than $\mathrm{H}-\mathrm{Cl}$ bond.

Which of the following compounds are dipolar?

Amongst $\mathrm{LiCl}, \mathrm{RbCl}, {\mathrm{BeCl}}_2 \text{and} {\mathrm{MgCl}}_2$, the compounds with the greatest and the least ionic character, respectively, are.

The most polarisable ion among the following is.