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- Which point is not related to transition metals O They exhibit high melting and boiling points O Generally coloured compounds Readily form ionic or covalent compounds O They do not show variable valencyA volatile liquid 1. evaporates readily 2. has a low vapor pressure 3. has a high boiling point 4. is unreactive O 1 O 2 O 4The major component of natural gas is O CH4 benzene O H3CCH2CH2CH2CH2CH3 O H3CCH2CH2CH2CH3