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group 7 - halogens group 8 - noble gases
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Column VII A is an obsolete name; the official name of IUPAC is Group 17 (halogens group).
These obtained compounds are halides, ionic compounds.
Group 3 to 12 in period IV to VII: the socalled d-blockelements. There are about 30 to 40 transition elements, a lot of them are artificial.
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Some characteristics of the Edwardian era are that it was a period of time under the reign of King Edward VII and was from 1901-1910. There was a large influx in poverty among women, but there were working class women at this time.
group 7 - halogens group 8 - noble gases
Group VII and Group 8 ( the noble gases)
Group VII, the Nitrogen Family
Group VII A or XVII or Halogens.
Group 7 elements are known as "halogens".
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Group VIIA elements are known as halogens and all have 7 valence electrons.
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Column VII A is an obsolete name; the official name of IUPAC is Group 17 (halogens group).
It is because they are halogens