Why p-orbital possess directional properties?

Why s-orbital does not possess directional properties?

(a0 Which one between p^(-) and sp^(-) orbitals has more directional properties and why? (b) does PC l_(5) form PCl_(5) and Cl_(2) on strong heating?

Explain why covalent bonds possess directional property.

Explain why graphite possesses lubricating properties.

Do isobars possess similar chemical properties?

Do isotopes of an element possess different chemical properties ?

Do structural isomers possess similar chemical properties?