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what kind of element has less than 4 valence electron

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Usopsairaidn

Elements that has a valence of less than 4 electrons are mostly metals and form a positive ion after ionic bond. They have large atomic radius, low ionization energy, low electron affinity, and low electronegativity.  

Looking into the periodic table, the family that has 4 less than 4 valence electron are  Family 1A the alkali metals that has 1 valence electron, Family 2A The alkaline earth Metals that has 2 valence electron, 3A in which only the Boron  is a metaloids and transition metals under 3B.  

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