Covalent Bond

How was microwave oven accidentally invented?

How did Percy Spencer invent the microwave?

Boron trifluoride is a nonpolar molecule, whereas ammonia is a polar molecule. Why ?

Compare the net dipole moment of ${\mathrm{NH}}_3$ and ${\mathrm{NF}}_3$.

Calculate the value of net dipole moment in containing lone pair of electrons.

What will be the value of net dipole moment in asymmetrical molecule using vector concept.

Calculate the value of net dipole moment in asymmetrical molecule using vector concept.

What is the value of net dipole moment in the symmetric molecule.

What is a bond length?

Which of the following compounds are dipolar?

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

How bond energies and bond lengths of molecule help us in predicting their chemical properties? Explain with examples.