Metals are those elements whose valence electrons are 1, 2 or 3.
They loses electrons to form cations.
1. Metals are malleable and ductile.
2. Metals are good conductors of heat and electricity.
3. Metals are lustrous.
4. Metals are strong .
5. They have high tensile strength.(except sodium and potassium which are not strong and have low tensile strength).