Select correct statement about radius of...

Select correct statement about radius of an atom:

Values of van der Waal's radii are larger than those of covalent radii because the van der Waal's forces are much weaker than the forces operating between atoms in a covalently bonded molecule.

The metallic radii are smaller than the van der Waal's radii, since the bonding forces in the metallic crystal lattice are much stronger than the van der Waal's forces.

Both are correct

None is correct

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Select thr correct statement about radius of an atom.

Values of vander waals radii are larger than those of covalent radii

the metallic radii are smaller than the vander waals radii

both(1)(2)

none of the above

Select correct statement/s about borax

It is preperd from colemanite ore

All boron atoms are in same hybridisation state

It produces alkaline solution when dissolved in water

It produces `B_(2)O_(3), NaBO_(2)` and `O_(2)` on strong heating

Select correct statement about CH_(4)

All the hybrid orbirals of carbon are equivalent

All the hybrid orbitals of carbon have `25%` `S` character

All the hybrid orbitals of carbon are projected at the four vertex of a regular tetrahedron.

All are correct statements