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Sagot :
The group number of a non-transition metal can be used to figure out how many valence electrons are in an atom of that metal. How many electrons are in an atom of an element that is part of this group? It means:
•In group 1, there is only one valence electron in it.
•There are two valence electrons in group 2.
•All three valence electrons in group 13 are in this group.
•When you look at group 14, there are 4 valence electrons.
•Five electrons in group 15 have the same number of valence electrons
•When you look at the group 16, there are 6 valence electrons in it.
•When you look at group 17, there are 7 valence electrons.
•When you look at the group 18, there are 8 valence electrons in it (except for helium, which has 2)
Once again, the group number of the element you are looking at can tell you its valence electrons, so keep that in mind. Even though you can usually follow a pattern when it comes to the transition metals, there isn't one. The group number will usually correspond to the range of possible valence electrons. They are:
There are three valence electrons in group 3.
•Group 4: 2 to 4 valence electrons in each of the three groups.
•There are 2 to 5 electrons in group 5.
•There are 2 to 6 electrons in group 6.
•Group 7: 2 to 7 valence electrons in each of the three groups.
•There are two or three electrons in group 8.
•Group 9: 2 or 3 electrons in the valence shell.
•Group 10: 2 or 3 electrons in the valence shell.
•valence electrons in group 11 can have one or two of them.
•When you look at group 12, there are two valence electrons in it.
•There's a good chance you did.
•In group 1, there is only one valence electron in it.
•There are two valence electrons in group 2.
•All three valence electrons in group 13 are in this group.
•When you look at group 14, there are 4 valence electrons.
•Five electrons in group 15 have the same number of valence electrons
•When you look at the group 16, there are 6 valence electrons in it.
•When you look at group 17, there are 7 valence electrons.
•When you look at the group 18, there are 8 valence electrons in it (except for helium, which has 2)
Once again, the group number of the element you are looking at can tell you its valence electrons, so keep that in mind. Even though you can usually follow a pattern when it comes to the transition metals, there isn't one. The group number will usually correspond to the range of possible valence electrons. They are:
There are three valence electrons in group 3.
•Group 4: 2 to 4 valence electrons in each of the three groups.
•There are 2 to 5 electrons in group 5.
•There are 2 to 6 electrons in group 6.
•Group 7: 2 to 7 valence electrons in each of the three groups.
•There are two or three electrons in group 8.
•Group 9: 2 or 3 electrons in the valence shell.
•Group 10: 2 or 3 electrons in the valence shell.
•valence electrons in group 11 can have one or two of them.
•When you look at group 12, there are two valence electrons in it.
•There's a good chance you did.
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