give two example of each (a)electo negative ions monovelent,divalent,trivalent
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Examples for monovalent atoms are Hydrogen, Sodium, Chlorine, etc. An atom, ion, or elements with a valence of two, is called divalent. Examples for divalent atoms are Oxygen, Magnesium, Sulphur, etc. An atom, ion, or elements with a valence of three, is called trivalent.
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