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what kind of element usually forms covalent bond/ is it possible for metals and non-metals to form nonpolar covalent/ why/ how about polar covalent bond? why?

Sagot :

Covalent bond is usually formed when two non metals share electrons.It is not possible that metal share electrons wjth metal and formed covalend bond.
polar covalent bond is formed when the difference of electronegativity betwwen electron sharing atoms is greater then 1.4