Group_7_element Group_7_element

Group 7 element - Definition and Overview
Related Words: Acidity, Addend, Adjunct, Agent, Air, Alkali, Alkalinity, Americium, Anion, Antacid, Antilogarithm, Argument, Article, Aspect, Astatine, Atmosphere, Atom, Autecology, Base, Basic, Basis, Berkelium
Group 7
Period
4 25
Mn
5 43
Tc
6 75
Re
7 107
Bh

A Group 7 element is an element in periodic table group 7 (IUPAC style) in the periodic table, which consists of:

All of these elements are classed in Group 7 because their valence shell holds four electrons. Technetium has no stable isotopes. Technetium, and promethium (61), are the only two such elements before polonium, after which no known element has a stable isotope.

Key to color coding in table slice on right: Transition metals

Color coding for these atomic numbers: At room temperature, all are solid; red indicates item is synthetic and does not occur naturally.

Example Usage of element
ix__xi: @robotspaceship 6,7th element ? RT @crystalmethod: thx @mseasy 4 these pix! http://bit.ly/6cre36 & http://bit.ly/5bGXQ0
munchhauzen: 2- It also plans a series of new fuel efficient and clean, as the Volt, a crucial element of the programming of GM vehicles for the future.
GolfingFanUK: I'm ebaying...again. - BNWT NIKE XTREME element GOLF BAG - http://bit.ly/5vB29Z
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