Important structure of a molecule

Resonance structure of a molecule cannot have

The canonical or resonating structures of a molecule required to describe the structure of a molecule follow which of the following rules ?

For the molecule XeF_2 : Draw the structure of the molecule indicating the lone pairs.

The correct electron dot structure of a water molecule is

What is the hybridization of chlorine atom in CIF_3 molecule ? (ii) Draw the structure of the molecule and state its geometry.

Which of the following statements are incorrect about canonical structures ? All canonical structures of a molecule :

Elucidate the importance of Chargaff's rule in the structure of DNA molecule.

Discuss .the structure of water molecule.

Draw the structure of ammonia molecule.