Answer: covalent compounds
Explanation: covalent compounds are soft because of the small attractive forces which makes it malleable and this same low attractive force between their molecules makes it difficult to attract another molecule.
Covalent compounds has low melting point because of the little energy required to break the covalent bond(i.e covalent bond is a weaker bond which is easy to break with little energy) present in the substance.
Covalent compounds are poor conductors of electricity because the ions present in the substance cannot move,they are assembled in a place which makes it difficult to carry a current.