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It has 8. It just depends on the group, like group 1 has 1 valence electron, and so on, but it doesn't count for metals, so when you get to group 2, skip the metals and go to group 13 which has 13 valence electrons. There's a pattern.
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∙ 13y ago
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∙ 12y agoThere is no such thing as group 18. In the Periodic Table, there are only groups 1-8. If that was a typo and you meant group 8, there are 8 valence electrons.
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∙ 13y ago8 in all of them except for helium, which only has two valence electrons. See attached link for more information on valence electrons.
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∙ 14y agothey are the noble gases. (He, Ne, Ar, Kr, Xe, Rn) all of their energy levels are filled up, that is why the elements in this group rarely have compounds.
Wiki User
∙ 11y agoGroup 18 is the noble gases, which have 8 valence electrons.
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How many valence electrons does an atom have from group 16?
Atoms of elements in Groups 13-18 have 10 fewer valence electrons than their groups numbers.However , helium atoms have only 2 valence electrons.
How many valence electrons do each what elements have boron gold krypton and calcium?
Gold has 25 valence electrons
How many valance elctrons does phosphorus have?
This is a chemical element. You can find the how many electron in a single atom by using a Periodic Table.
How many valence electrons does a neutral atom of silicon have?
A neutral atom of silicon will have 4 valence electrons. The amount of valence electrons that a neutral atom will have can be found by the atoms group number in the periodic table.
How many valence electrons do Halogens have?
The number of electrons are different from one to another, however all of them have seven electrons in the valence shell.
How many valence electrons do elements group 17 have?
There are 7 valence electrons in elements of group-17. They are called halogens.
How many valence electrons can an atom have?
That depends on the element in question. Atoms can have anywhere from 1 to 8 valence electrons. For the main group elements, Groups 1,2,13-18, the number of valence electrons are the number in the one's place in their group number, as follows: Group 1 Elements: 1 valence electron Group 2 Elements: 2 valence electrons Group 13 Elements: 3 valence electrons Group 14 Elements: 4 valence electrons Group 15 Elements: 5 valence electrons Group 16 Elements: 6 valence electrons Group 17 Elements: 7 valence electrons Group 18 Elements: 8 valence electrons The transition metals, Groups 3 - 12, are more complicated because they are adding d electrons, some of which behave like valence electrons, and many transition metals can have different numbers of valence electrons. For example manganese can have anywhere from 2 to 7 valence electrons.
How many valence electrons does group 8 have?
Elements in group 8 all have 8 valence electrons, this is why these elements are in group 8, they are called noble gases, some examples are Argon, Xenon,
The Halogen family elements have how many valence electrons?
Halogen family members, or elements in group 17, have 7 valence electrons.
How many valence are in chlourine?
A total of 7 valence electrons. If I remember correctly, the number of valence electrons of all group A elements are designated by their group number. Chlorine is in group VIIA, hence 7 valence electrons.
How many valence electrons do the boron group have?
Boron is located in group 3A. It is group 13 in modern notation. This set of elements have three valence electrons.Boron is in the 13th group in the periodic table. Elements in this group has 3 electrons in the outermost energy level. That means they have 3 valence electrons.
How many valence electrons do the 6A elements have?
The Group 6A elements are oxygen, sulfur, selenium, tellurium and polonium. The number of valence electrons in Group 6A is 6.
Sulfur contains how many valence electrons?
Group 16 (VIB or VIA) elements have six valence electrons.
How many valence electrons does the sulfur atom contain?
Group 16 (VIB or VIA) elements have six valence electrons.
How many valence electron are in a baruim?
Barium is a group 2 element. All group 2 elements have 2 valence electrons. Thus, barium has 2 valence electrons.
How many valence electrons do transitions elements have?
How many valence electrons do transition elements have?
How many valence electron does calcium have?
Calcium has 2 valence electrons, like all Group 2 elements.
