What is the valency of aluminium (Atomic number-13)?
Find the valency and valence electrons in Aluminium (Atomic number =13)
(a) What are valence electrons? Where are valence electrons situated in an atom ?
(b) What is the number of valence electrons in the atoms of an element having atomic number 13 ? Name the valence shell of this atom.
What valencies will be shown by the elements A, 13, C, D and E having atomic numbers 2, 4, 8, 10, and 13 respectively.