(A Levels Chemistry) URGENT!! There's a test tmr :(

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chocoberries
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Why does ionic bond present in tertraaminecopper(II) sulphate? Thank you
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CaptainJackFail
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Copper (II), Cu^2+ , is a positive ion which is bonded to a negative ion ,sulfate ion , SO3^2-, hence forming ionic bonds.
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chocoberries
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(Original post by CaptainJackFail)
Copper (II), Cu^2+ , is a positive ion which is bonded to a negative ion ,sulfate ion , SO3^2-, hence forming ionic bonds.
How about covalent bond in addition to dative covalent bond?
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xXShiny9TalesXx
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(Original post by chocoberries)
Why does ionic bond present in tertraaminecopper(II) sulphate? Thank you
Tetraamminecopper(II) sulfate is the inorganic compound with the formula [Cu(NH3)4(H2O)n]SO4. This dark blue solid is a metal complex with faint odor of ammonia. It is closely related to Schweizer's reagent, which is used for the production of cellulose fibers in the production of rayon. It is used to print fabrics, used as a pesticide and to make other copper compounds like copper nano-powder.

found this on Wikipedia hope it helps
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Some one
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It's actually the [Cu (NH3)4] 2+ cation and the SO4 2- anion that forms the ionic bond. Yes the cation does contain covalent bonds too
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chocoberries
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(Original post by Some one)
It's actually the [Cu (NH3)4] 2+ cation and the SO4 2- anion that forms the ionic bond. Yes the cation does contain covalent bonds too
but covalent bonds are between non-metals right? Copper and ammonia are metal and non-metal
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Some one
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(Original post by chocoberries)
but covalent bonds are between non-metals right? Copper and ammonia are metal and non-metal
No that is indeed a misconception. It is the difference in electronegativity between the two elements that determine whether the compound is ionic or covalent. Generally metals have low electronegativity and non metals have high electronegativity so we usually say metals and non metals form ionic bonds, but that is not always correct. In this example, the electronegativity difference is not large enough for complete transfer of electrons so a covalent bond forms. Another example is FeCl3 where there is a covalent bond between a metal and non-metal.
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