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according to the electronegativity difference of a molecule has an electronegativity difference of 0.5 to 2.0 the molecule is said to be​

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Answer:

If the electronegativity difference (usually called ΔEN) is less than 0.5, then the bond is nonpolar covalent. ... If the ΔEN is between 1.6 and 2.0 and if a metal is involved, then the bond is considered ionic. If only nonmetals are involved, the bond is considered polar covalent.