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If you look on any table of elements you will notice there are numbers on the top. They will either be listed as numbers 1- 18 or 1A-8A and 1B-8B, these are the groups. If it is labeled 1-18 then you look at the last number and that is the valence electron, except for numbers 9 and 10 which would also be 8. This is because you can not have more then 8 electrons in the last ring. If it is labeled 1A- 8A and 1B- 8B then just look at that number(ignoring the letter obviously) and that is the number of valence electrons.
Ex.
If you look at say C(Carbon) which is in the 14th group or 4B and it has 4 valence electrons.
It would probably help you if you looked at a table of elements while reading this to get a visual aid.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoBy examining "The Valence Shell Diagram".
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Which number tells you the number of valence electrons?
The group numbers tell the number of valence electrons. Without looking on the group number you can also tell the number of valence electrons by looking at the highest energy level in the electronic configuration.
Does the valence shell of electrons determine how one atom bonds to another atom to make a molecule?
No, valence electrons are the electrons in the outermost energy level of an atom. A molecule is the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
What does the number of valence electrons tell you about a given element?
If its positive it tells u that it has that number of valence electrons. If negative it tells you that it requires that number of electrons to make the valence electrons filled up/stable. If you know which Ion it is, you know the number of valence electrons of the neutral Atom. It corresponds to the group in the periodic table, the element is in. For example: Mg. It's in group 2, so it has 2 valence electrons. The oxidation number now tells you how many more or less electrons the atom has. For example: Mg(II) has 2 positive charges, hence two electrons less. That means it has 0 valence electrons. Take complete number of valence electrons, subtract the oxidation number and you get the number of valence electrons in the ion.
What does electron configuration tell you about an element?
The electrons in an atom can tell you many things about the element such as: ~the atomic number ~number of valence electrons ~what column the element is in ex: Because if fluorine is element number 9 then there are 9 electrons.
What does the group number of A elements in the AB numbering system tell about valence electrons?
all the elements in group A has the same number of valence electrons
What does the number of electrons on the outershell of an atom tell us?
The valence of the element
What does the outer shell of electrons of an atom tell you?
The electrons on the outermost shell of an atom tell you how many valence electrons an atom on the periodic table has , and this number can be used to apply to the octect rule .
If an atom has a stable number of electrons how can you tell?
It's outer valence shell is full.
Do compounds have valence electrons?
No. it is the term used to tell the electrons in an atom.
Which number tells you the number of valence electrons?
The group numbers tell the number of valence electrons. Without looking on the group number you can also tell the number of valence electrons by looking at the highest energy level in the electronic configuration.
What does the group number of the periodic table tell you about the structure of an atom?
the group number,element in some way describes the number of valence electrons or the property that they exhibit
What does the group number of a element tell about valence electrons?
All elements in the same A group will have the same number of valence electrons.
Does the valence shell of electrons determine how one atom bonds to another atom to make a molecule?
No, valence electrons are the electrons in the outermost energy level of an atom. A molecule is the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound.
What does the number of valence electrons tell you about a given element?
If its positive it tells u that it has that number of valence electrons. If negative it tells you that it requires that number of electrons to make the valence electrons filled up/stable. If you know which Ion it is, you know the number of valence electrons of the neutral Atom. It corresponds to the group in the periodic table, the element is in. For example: Mg. It's in group 2, so it has 2 valence electrons. The oxidation number now tells you how many more or less electrons the atom has. For example: Mg(II) has 2 positive charges, hence two electrons less. That means it has 0 valence electrons. Take complete number of valence electrons, subtract the oxidation number and you get the number of valence electrons in the ion.
What does the group number A elements (in the AB numbering system) tell about valence electrons?
The group number tells you the number of valence electrons present.
What does the group number of A elements (in the AB numbering system) tell about valence electrons?
The group number tells you the number of valence electrons present.
What does the group number of A elements (in the AB numbering system ) tell about valence electrons?
The group number tells you the number of valence electrons present.
