There are 3 valence electrons in group 3(a) element.
The electrons inside an atom's outermost shell, as well as energy level, are known as valence electrons.
Groups are the names given to the columns of the given periodic table. In the table, individuals who belong to the same group make bonds of the identical kind and will have an equal count of electrons in respective atoms' outermost shells.
It is known that, the elements have an identical count of valence electron then they will be kept in the same kind of group in a periodic table.
Hence, group 3 (a) elements have 3 valence electrons.
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