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Module 1: Elementos de la primera serie de transición

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Metales de transición y grupo I y II metales - una comparación

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XSIQ
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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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