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anonymous

  • one year ago

Which statement is true? A. a molecule having a covalent bond can be ionic B. a molecule having a covalent bond is always polar C. a molecule having a covalent bond may be polar or nonpolar D. a molecule having a covalent bond i =s always nonpolar

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  1. Photon336
    • one year ago
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    A molecule with a covalent bond is always polar: CF4 disproves this and let's try to understand why. In CF4 is obviously tetrahedral but for this to happen, there must be a net dipole moment, for the molecule to be polar, but when you draw it out the dipoles cancel, making it non-polar.

  2. Photon336
    • one year ago
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    A molecule having a covalent bond can be ionic. Poly atomic ions involve a sharing of electrons covalent and gaining/losing of electrons (ionic) to fulfill their octet. Take sodium carbonate for example. Na2CO3, contains both type.

  3. anonymous
    • one year ago
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    thank you! @Photon336

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