scandium

/skan-dee-uhm/US // ˈskæn di əm //UK // (ˈskændɪəm) //

钪,钪系,钪的,钪的作用

Definitions

n.名词 noun

1
Chemistry.
- : a rare, trivalent, metallic element obtained from thortveitite. Symbol: Sc; atomic weight: 44.956; atomic number: 21; specific gravity: 3.0.

In 1875 Lecoq de Boisbandram discovered gallium, which filled one of the gaps; scandium and germanium filled the other two later.
Its group members, scandium and yttrium, have the same form; we have not examined the fourth; the group is positive.
The A funnel of vanadium repeats the A funnel of scandium, with the addition of d 20, already studied.
Nitrogen has nothing new to show us, all its constituents having appeared in scandium and yttrium.
In yttrium, on the proto level, a 110 and b 63 both escape from the funnel, and behave as in scandium.