Use the table above to draw the Bohr model diagram for the following atoms and ions. Electrons 10 10 10 14 18 18 Number of electron shells Atomion neon atom fluorine atom fluorine ion sodium atom sodium ion argon atom chlorine atom chlorine ion potassium atom potassium ion Atomic number Number of 10 protons 10 2.
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For example carbon is in group 4 and has 4 valence electrons.
Valence electrons are in an atom. Oxygen is in group 6 and has 6 valence electrons. Argon atom 22N Chlorine atom. The main group number for an element can be found from its column on the periodic table.
For neutral atoms the number of valence electrons is equal to the atoms main group number. For charged atoms there is a deviation. Look at the following table.
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