A group, also known as a family, is a vertical column in the periodic table of the elements.
Groups are considered the most important method of classifying the elements. In some groups, the elements have very similar properties and exhibit a clear trend in properties down the group — these groups tend to be given trivial (non-scientific) names, e.g. the alkali metals, alkaline earth metals, halogens and noble gases.
Summary of Periodic Table Trends
Moving Left --> Right
Atomic Radius Decreases
Ionization Energy Increases
Electronegativity Increases
Moving Top --> Bottom
Atomic Radius Increases
Ionization Energy Decreases
Electronegativity Decreases
The Boron group is the series of elements in group 13 (IUPAC style) in the periodic table. 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).
2006-11-13 03:06:16
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answer #1
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answered by DanE 7
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Families are more commonly called groups, and Group 13 is also known as the "boron group." Boron (B), aluminium (Al), gallium (Ga), indium (In), and thallium (Tl) all have three electrons in their valence shells. Boron is a metalloid, and the others are all "poor metals," meaning that they are metals that have fairly low melting and boiling points, and they are soft.
2006-11-13 11:06:43
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answer #2
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answered by DavidK93 7
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