Talk:Transition metal

Problems with the chart of oxidation states

This chart showing oxidation states of transition metals looks really nice:

https://commons.wikimedia.org/wiki/File:Transition_metal_oxidation_states.svg

but the chemist Matt Cliff tweeted:

"This chart is a little odd: Ru(II) and Ru(III) are the most common oxidation states in its coordination chemistry, and whether some of the rarer states are included or not is a bit strange."

I checked, and indeed Ru(II) and Ru(III) are common oxidation states not shown in the chart. So someone should fix this chart!

Update this has been edited now, thanks to John Baez for pointing the missing states and to Andel for fixing them. Dabed (talk) 17:52, 19 February 2022 (UTC)

Ca3+

"In fact Ca3+ has an ionisation enthalpy so high that it rarely occurs naturally."

Are you sure? I never, ever heard of naturally occurring Ca3+! Sounds suspicious to me... --malbi

I suspect this is true that it never occurs naturally. I think this paragraph should be reworked; it's too much about calcium and group II and not enough about transition metals. Olin

I went and revised it. Olin

The periodic table of the transition elements

Group	3 (III B)	4 (IV B)	5 (V B)	6 (VI B)	7 (VII B)	8 (VIII B)	9 (VIII B)	10 (VIII B)	11 (I B)	12 (II B)
Period 4	Sc 21	Ti 22	V 23	Cr 24	Mn 25	Fe 26	Co 27	Ni 28	Cu 29	Zn 30
Period 5	Y 39	Zr 40	Nb 41	Mo 42	Tc 43	Ru 44	Rh 45	Pd 46	Ag 47	Cd 48
Period 6	L	Hf 72	Ta 73	W 74	Re 75	Os 76	Ir 77	Pt 78	Au 79	Hg 80
Period 7	A	Rf 104	Db 105	Sg 106	Bh 107	Hs 108	Mt 109	Ds 110	Rg 111	Cn 112

Orphaned references in Transition metal

I check pages listed in Category:Pages with incorrect ref formatting to try to fix reference errors. One of the things I do is look for content for orphaned references in wikilinked articles. I have found content for some of Transition metal's orphans, the problem is that I found more than one version. I can't determine which (if any) is correct for this article, so I am asking for a sentient editor to look it over and copy the correct ref content into this article.

Reference named "Miessler":

• From HSAB theory: Miessler G.L. and Tarr D.A. "Inorganic Chemistry" 2nd ed. Prentice-Hall 1999, p.181-5
• From Hydrogen: Miessler, G. L.; Tarr, D. A. (2003). Inorganic Chemistry (3rd ed.). Prentice Hall. ISBN 978-0-13-035471-6.
• From VSEPR theory: Miessler, G. L.; Tarr, D. A. (1999). Inorganic Chemistry (2nd ed.). Prentice-Hall. pp. 54–62. ISBN 978-0-13-841891-5.

I apologize if any of the above are effectively identical; I am just a simple computer program, so I can't determine whether minor differences are significant or not. AnomieBOT⚡ 01:28, 10 September 2020 (UTC)

Fixed. Dirac66 (talk) 02:22, 10 September 2020 (UTC)