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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.
Teejay Desabelle
Wiki User
∙ 7y agoThe number of valence electrons is given by the GROUP number. So, group 3 has 3 valence electrons, and group 17 has 7 valence electrons.
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The number of valence electrons for 1s22s22p4 is?
The electronic configuration tells that the element is Oxygen and has 6 electrons in valence shell because there are 6 electrons in the 2nd energy level.
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.
An electron dot diagram shows an atoms number of?
Electron dot formula tells the number of valence electrons
Number of valence electrons in Ga?
3 electrons !
How do you find the number of non-valence electrons?
Take the atomic number then subtract the amount of valence electrons. Example: Number of non valence (inner) electrons in Sulfur: 16 (atomic number) - 6 (valence electrons) = 10 (valence or inner electrons)
Are periods valence electrons or electron shell?
The period tells you the valence ELECTRON SHELL (energy level). The group tells you the number of valence electrons.
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.
The number of valence electrons for 1s22s22p4 is?
The electronic configuration tells that the element is Oxygen and has 6 electrons in valence shell because there are 6 electrons in the 2nd energy level.
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.
How do you find number of valence electrons?
Take the atomic number then subtract the amount of valence electrons. Example: Number of non valence (inner) electrons in Sulfur: 16 (atomic number) - 6 (valence electrons) = 10 (valence or inner electrons)
How does group number tell you the aout of valence electrons?
The group number tells you how many valence electrons there are, except for transition metals, lanthanides, and actinides. So, for groups 1 and 2 , there are 1 and 2 valence electrons, respectively. Then it gets a little tricky. You skip to group 13, past the transition metals. What to do? You can't have 13 valence electrons. What you do is you use only the ones digit. Thus, metals in group 13 would have 3 valence electrons. The reason that the group number tells you the number of electrons is that that is the way that Dmitri Mendeleev ( the founder of the periodic table) set it up. Good Luck!
An electron dot diagram shows an atoms number of?
Electron dot formula tells the number of valence electrons
What is the number of valence electrons for He?
Two valence electrons.
Number of valence electrons in Ga?
3 electrons !
How do you find the number of non-valence electrons?
Take the atomic number then subtract the amount of valence electrons. Example: Number of non valence (inner) electrons in Sulfur: 16 (atomic number) - 6 (valence electrons) = 10 (valence or inner electrons)
