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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: 21385 on December 27, 2007, 12:37:34 AM

Title: Covalent bonding question
Post by: 21385 on December 27, 2007, 12:37:34 AM

How many atoms are covalently bonded to the chromium atom in Cr(NH(3))(4)Cl(3)?

The answer is 6 but I do not know why, can someone explain this for me? Thanks a lot

Title: Re: Covalent bonding question
Post by: Sev on December 27, 2007, 01:02:44 AM

perhaps 1 Cl is not coordinated to Cr

[Cr(NH₃)₄Cl₂]Cl

Title: Re: Covalent bonding question
Post by: 21385 on December 27, 2007, 01:47:08 AM

But how do you know it is 6, not 8, 7, or any other possible coordinate numbers? Is it just knowledge?

Thanks

Title: Re: Covalent bonding question
Post by: AWK on December 27, 2007, 04:28:53 AM

Quote from: 21385 on December 27, 2007, 01:47:08 AM

But how do you know it is 6, not 8, 7, or any other possible coordinate numbers? Is it just knowledge?

Thanks

Yes, this is a knowledge from coordination chemistry.