Group 3 element

Group	3
Period
4	21 Sc
5	39 Y
6	71 Lu
7	103 Lr

(La)	57 La
(Ac)	89 Ac

A Group 3 elementan elementperiodic table group 3 (IUPAC style) inperiodic table, which consists of:

Scandium (21)
Yttrium (39)
Lutetium (71)
Lawrencium (103)
Lanthanum (Lanthanide) (57)
Actinium (Actinide) (89)

Allthese elementsclassedGroup 3 because their outer shell holds three electrons. Becausehave an odd atomic number,have few stable isotopes. Scandium, Yttrium, Lutetium, LanthanumActinium can all be found naturally, albeit at very low levels inEarth's crust, andcollectively called rare-earth metals, alongothersGroup 67. Lawrencium can only be produced inlaboratoryhas not been foundnature.

KeyColor CodingTable slice on right: Transition metals Lanthanide Series Actinides Series

Color codingthese atomic numbers: At room temperature, allsolid; red indicates itemsyntheticdoes not occur naturally.