Question
Chemistry Question on Classification of elements & periodicity in properties
Elements belonging to the same group of periodic table have
A
same number of energy levels
B
same number of valence electrons
C
same number of electrons
D
same ionisation enthalpy.
Answer
same number of valence electrons
Explanation
Solution
Elements belonging to the same group of the periodic table have the same valence shell electronic configuration thus have the same number of valence electrons.