Electron gain enthalpy. Solution : The repetition of similar chemical properties of elements at regular intervals with increasing atomic number is called periodic property or periodicity.
Explanation:
Electronegativity values of elements decreases as we go down in a group. Electronegativity increases along a period from left to right.
Answers & Comments
The Correct Answer is D
Because :
The atomic Mass, Valency And metallic character are needed for the change of a group or a period..
Answer:
Electron gain enthalpy. Solution : The repetition of similar chemical properties of elements at regular intervals with increasing atomic number is called periodic property or periodicity.
Explanation:
Electronegativity values of elements decreases as we go down in a group. Electronegativity increases along a period from left to right.