All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum. Both Boron and Aluminium have 3 valence electrons, but Boron is considered a metalloid and Aluminium is considered a metal.
All elements in group (column) 13 on the Periodic Table of the Elements have three electrons in their outermost energy levels. These are called valence electrons.
All elements in group 13 has three electrons in its outer-most orbit.
boron , aluminium, gallium, indium, thallium , and ununtrium
All elements in group 13 ( boron , aluminium, gallium, indium, thallium , and ununtrium) have 3 valence electrons, they are part of the Boron family