ASodium (Na) BSilicon (Si) CAluminum (Al) DCalcium (Ca)Silicon has the most valence electronsIt\'s really easy to figure out the number of valence electrons in an atom if you have a periodic tableLook at the top of the periodic tableThere will be numbers telling apart the different columnsFor columns 1-9, the column number is the number of valence electronsFor example, sodium, in column 1, has 1 valence electron, and calcium, in column 2, has 2 valence electronsFor columns 10-18, the last number is the number of valence electronsAluminum, in column 13, has 3 valence electrons, while silicon, in column 14, has 4 electrons.Other related question