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Chemistry....helpppp

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Predict Which among the following substances is likely to have a relatively high melting point.(more than one answer may be selected)
* P4
* CaCl2
* CCl4
* AlN
* CaC2
* None of the above

  • Chemistry....helpppp - ,

    Most ionic compounds have high melting points; most covalent compounds have low melting points. That isn't a hard and fast rule (diamond, for example,doesn't follow this rule).
    I see three compounds in your list with more than a little ionic character.

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