Answer:
Elements it the same group have the same properties as listed below.
Explanation:
1) The same number of electrons in their valence shell
2) The same chemical properties
3) Atomic size
4) Ionic size
5) Ionization potential
6) Electropositivity increases
7) Electronegativity decreases
8) Electron gain enthalpy
Action and reaction are equal but act in opposite directions
Extrusive Igneous Rock
Formation of new elements