BORON GROUP

(Redirected from Group 13 element)

Group	13
Period
2
3
4
5
6
7

The 'Boron group' is the series of elements in group 13 (IUPAC style) in the periodic table. The group has previously also been referred to as the 'earth metals' and the 'triels', from the Latin ''tri'', three, stemming from the naming convention of this group as Group IIIB. The group was also once known as the 'whistogens'. These elements are characterized by having three electrons in their outer energy levels (valence layers). Boron is considered a metalloid, and the rest are considered metals of the poor metals group.
The boron group consists of boron ('B'), aluminium ('Al'), gallium ('Ga'), indium ('In'), thallium ('Tl'), and ununtrium ('Uut') (unconfirmed).
Boron occurs sparsely probably because of disruption of its nucleus by bombardment with subatomic particles produced from natural radioactivity. Aluminum occurs widely on earth and in fact, it is the third most abundant element in the earth's crust (7.4%).

'Explanation of above periodic table slice:'

Metalloids	Poor metals	atomic number in are solids	solid borders are primordial elements (older than the Earth)	dotted borders are radioactive, synthetic elements