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which one of these compounds only has covalent bonds? aluminum carbonate, calcium oxide, sulfur hexafluoride, magnesium...

which one of these compounds only has covalent bonds? aluminum carbonate, calcium oxide, sulfur hexafluoride, magnesium hydroxide?

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Answer #1

Covalent bond exists always between two non metals . If one element is metal than there is ionic bond in the compound.

So Aluminium carbonate= ionic + Covalent bonds

Calcium oxide (CaO) = ionic bond

Sulphur hexafluoride (SF6) = all 6 are Covalent bonds .(bonds between two non-metals )

Magnesium Hydroxide = ionic + Covalent bonds

So answer is SF6

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