What is peroidic property?
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Answer:
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. ... This is called periodic property.
Explanation:
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Answer:
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.
Period : Atomic radii of elements decrease across period from left to right. As electrons enter into the same main shell.
b) Ionisation energy: The energy required to remove electron from the outer¬most orbit or shell of a neutral gaseous atom is called ionization energy. Group : Ionization energy decreases as we go down in a group.
Period : IE increases from left to right in a period.
c) Electron affinity : Electron affinity of an element is defined as the energy liberated when an electron is added to its neutral gaseous atom.
Group : Electron affinity decreases as we go down in a group.
Period : Electron affinity increase along a period from left to right.
d) Electronegativity : The electronegativity of an element is defined as the relative tendency of its atom to attract electrons towards it when it is bounded to the atom of another element.
Group : Electronegativity values of elements decreases as we go down in a group.
Period : Electronegativity increases along a period from left to right