What Are The Groups Of The Periodic Table?
May 12th, 2009
I’ve been looking on the internet at the periodic table. Though each one I look at, the name of each group changes. I know there are Halogens, Alkali metals, Alkali earth metals, Noble gases, non-metals… What are the rest?
What is the group called where the first element is Aluminium, the group with Scandium and the group down the bottom with Cerium? What are they actually called?
Thanks heaps,
Liana
Entry Filed under: Atomic Electron Confuguration
3 Comments Add your own
1. pisgahch | May 12th, 2009 at 10:58 pm
You could try the “boron family” for B, Al, Ga, In and Tl
The “scandium family” for Sc, Y, La, Ac
Are you talking about the portion of 6th period which includes Ce, and is filling the 4f-sublevel? That is the “lanthanide (or lanthanoid) series”.
2. Max | May 12th, 2009 at 10:58 pm
aluminium = group 3
scandium =period 4
cerium = transition metals
there r only 8 groups scandium is in none
group 1=alkali metals
2=alkaline earth metals
3=
4=titanium family
5=vanadium family
6=
7=halogens
8=consists of noble gases =helium,neon,argon,krypton,xenon and radon.
Group (periodic table)
The periodic table of the chemical elementsIn chemistry, a group (also known as a family) is a vertical column in the periodic table of the chemical elements. The name family is derived from the fact that the elements share similar characteristics and traits, just as members of any human family would. There are 18 groups in the standard periodic table.
The modern explanation of the pattern of the periodic table is that the elements in a group have similar configurations of the outermost electron shells of their atoms: as most chemical properties are dominated by the orbital location of the outermost electron. There are three ways of numbering the groups of the periodic table, one using Hindu-Arabic numerals and the other two using Roman numerals. The Roman numeral names are the original traditional names of the groups; the Arabic numeral names are those recommended by the International Union of Pure and Applied Chemistry (IUPAC) to replace the old names in an attempt to reduce the confusion generated by the two older, but mutually confusing, schemes.
There is considerable confusion surrounding the two old systems in use (old IUPAC and CAS) that combined the use of Roman numerals with letters. In the old IUPAC system the letters A and B were designated to the left (A) and right (B) part of the table, while in the CAS system the letters A and B were designated to main group elements (A) and transition elements (B). The old IUPAC system was frequently used in Europe while the CAS was most common in America. The new IUPAC scheme was developed to replace both systems as they confusingly used the same names to mean different things. The IUPAC proposal was first circulated in 1985 for public comments,[1] and was later included as part of the 1990 edition of their Nomenclature of Inorganic Chemistry.[2]
The periodic table groups are as follows (in the brackets are shown the old systems: European and American):
Group 1 (IA,IA): the alkali metals or lithium family
Group 2 (IIA,IIA): the alkaline earth metals or beryllium family
Group 3 (IIIA,IIIB): the scandium family
Group 4 (IVA,IVB): the titanium family
Group 5 (VA,VB): the vanadium family
Group 6 (VIA,VIB): the chromium family
Group 7 (VIIA,VIIB): the manganese family
Group 8 (VIII, VIIIB): the iron family
Group 9 (VIII, VIIIB): the cobalt family
Group 10 (VIII, VIIIB): the nickel family
Group 11 (IB,IB): the coinage metals (not an IUPAC-recommended name) or copper family
Group 12 (IIB,IIB): the zinc family
Group 13 (IIIB,IIIA): the boron family
Group 14 (IVB,IVA): the carbon family
Group 15 (VB,VA): the pnictogens or nitrogen family
Group 16 (VIB,VIA): the chalcogens or oxygen family
Group 17 (VIIB,VIIA): the halogens or fluorine family
Group 18 (Group 0): the noble gases or helium family/neon family
hope i helped ya
currently i too am doing chemistry
3. Norrie | May 12th, 2009 at 10:58 pm
The Groups are the Vertical columns.
Aluminium is in Group 13 (or 3A) in the Basic Metals.
Scandium is in Group 3 (or 3B) in the Transition Metals.
Cerium is in Group 3 (or 3B) in the Lanthanides (Rare Earth elements).
In addition to the above and those you have mentioned, there’s also Semi-metals.
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