Redox trends of the first row transition metals


by orgohell
Tags: metals, redox, transition, trends
orgohell
orgohell is offline
#1
Nov12-12, 02:00 AM
P: 3
Hey, I'm having trouble understanding the trends of the oxidation states for the first row of the transition metals

-my prof said that Cu is the only metal that forms a stable +1 oxidation state. But, I've done a question in hmwrk that had Cu+1 as unstable with respect to disproportionation how can it be both stable and unstable?

-The frost diagram for the transition metals has all (except Cu) with negative 2+/3+ oxidation states. Does this mean that the oxidation reaction M(metal)⇔Mz+ +ze- is thermodynamically favoured as the reduction couple (slope of the line) is negative?

Thanks a lot!
Phys.Org News Partner Chemistry news on Phys.org
First view of nature-inspired catalyst after ripping hydrogen apart provides insights for better, cheaper fuel cells
Following a protein's travel inside cells is key to improving patient monitoring, drug development
Team helps cancer treatment drugs get past their sticking point
Borek
Borek is online now
#2
Nov12-12, 02:56 AM
Admin
Borek's Avatar
P: 22,712
Quote Quote by orgohell View Post
my prof said that Cu is the only metal that forms a stable +1 oxidation state. But, I've done a question in hmwrk that had Cu+1 as unstable with respect to disproportionation how can it be both stable and unstable?
Stability is not a simple TRUE/FALSE concept. There are Cu(I) compounds that can be stored forever (think chalcocite) when isolated. But in water solutions, or in contact with air, they are not stable, and will either get oxidized or disproportionate.


Register to reply

Related Discussions
Electron configuration of transition metals Chemistry 0
Solubility of alkali earth metals/solvation energy,periodic trends, IMFs Biology, Chemistry & Other Homework 0
Oxidation States of Transition Metals Chemistry 1
Transition metals and orbitals Biology, Chemistry & Other Homework 2
transition metals Chemistry 7