Naming NH4[PtCl3(NH3)]

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Naming NH4[PtCl3(NH3)]

Postby Nikhil_Madan_3C » Thu Nov 10, 2016 2:16 pm

The name of this ammoniumamminetrichloroplatinate (II)
I was wondering why the charge of Platinum would be II and why metal is written in terms of an anion as platinate instead of platinum.

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Re: Naming NH4[PtCl3(NH3)]

Postby HarshiniMuthukumar3N » Thu Nov 10, 2016 4:10 pm

NH4 +1
Pt +2
Cl3 -3
NH3 neutral
coming to a total charge of 0.

Those are the charges. The actual compound [PtCl3(H3)] has a negative charge which is why there is an -ate at the end. We know Pt has a charge of +2 because we know the whole compound is neutral and for that to happen Pt has to be +2.

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Re: Naming NH4[PtCl3(NH3)]

Postby Anthony_Imperial_1G » Sat Nov 12, 2016 11:24 pm

Determine if the entire compound is neutral, negatively, or positively charged. After adding up the charges of different molecules in the compound, you can then determine what charge/roman numeral to put on the metal. In this case you would need to write Platinum (II) to make the compound neutral.

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