Which metal ion has strongest bonding with a sulfide ion, RS-

[From: ] [author: ] [Date: 12-08-27] [Hit: ]

RS^- is soft (easily polarized).The only metal ion on your list that is soft is Ag^+.-forget about the RS bit. Its just the metal ion you need to worry about. The most reactive of these ions is Na+, so it would be this one.......

Na+ Mg2+ Li+ Ag+

please do tell me why because this qn appeared in last yr's exam. NOTE that it is RS- with 1 charge.

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Metal ions can be be ranked as hard or soft acids and ligands as hard or soft bases.
Wikipedia: HSAB
Hard acids prefer hard bases and soft acids prefer soft bases
RS^- is soft (easily polarized). The only metal ion on your list that is soft is Ag^+.

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forget about the RS bit. It's just the metal ion you need to worry about. The most reactive of these ions is Na+, so it would be this one.

1

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