Chemistry - Transition metals and group I and II metals - a comparison
Transition metals and group I and II metals - a comparison
The significance of the occupied 3d subshell in the properties of the
first row transition metals is emphasised when a comparison is made with
the group I and II metals, all of which have their highest energy electrons
in an s-subshell.
The ability of some transition metals (and their compounds) to act as
catalysts can be related to the availability of spaces for electrons in the
d-subshell. Such spaces enable reacting substances to make effective
contact by bonding temporarily with the catalyst during reaction.
Further uses of transition metals include:
* copper in electrical wiring and copper alloys in coins
* nichrome wire, an alloy of nickel and chromium, as the heating element
in electrical radiators and jugs
* vanadium, manganese, nickel and cobalt as alloying elements in steels.
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