What is a periodic property? How the following properties vary in a
group and in a period? Explain
a) Atomic radius b) Electron gain enthalpy
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Explanation:
Periodic property : The physical and chemical properties of elements are related to their electronic configuration particularly the outershell configurations. The electronic configuration of valence shell of any two elements in a given period is not same. Due to this reason elements along a period possess different chemical properties with regular gradation in their physical properties from left to right. This is called periodic property.
a) Atomic radius: The distance between the nucleus and outermost orbitals called as atomic radius.
Group : Atomic radii increases from top to bottom in a group, the atomic number of the element increases.
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