The repulsions between two lone pairs is___than that between two bond pairs.

In XeF_(2) , molecule the angle between two lone pair orbitals is alpha , the angle between lone pair orbital and bond pair orbital is beta and the angle between bond pair orbitals is gamma :

If the central atom in certain molecule has two lone pairs and three bond pairs, the shape of the molecule could be

The distance between two base - pairs in DNA is :

In which of the following the repulsion between the nonbonding pairs of electrons of two atoms is large ?

Consider two pairs of neutrons. In each pair, the separation between the neutrons is the same. Can the force between the neutrone have different magnitudes for the two pairs?

Giving one example explain the shapes of following molecules : (i) Molecule containing one lone pair and four bond pairs. (ii) Molecule containing two lone pairs and three bond pairs. (iii) Molecule containing two lone pairs and two bond pairs.