Explain the term (a) periodicity in properties of elements (b) perio

1.	Explain the term (a) periodicity in properties of elements (b) periodic properties (c) periodicity of elements.
Answer» (a) Periodicity in properties of elements means occurrence of characteristic properties at definite intervals in the modem periodic table, when elements are arranged in increasing order of their atomic number. (b) Periodic properties: The properties which appear at regular intervals in the periodic table are called periodic properties. Periodic Properties are: Atomic radii Ionisation potential Electron affinity Electro negativity Non Metallic and Metallic character. Density Melting and boiling points. (c) Periodicity of elements: Occurrence of elements with similar chemical properties at definite intervals when elements are arranged in increasing order of their atomic numbers is called periodicity of elements.

Explain the term (a) periodicity in properties of elements (b) periodic properties (c) periodicity of elements.

Answer»

(a) Periodicity in properties of elements means occurrence of characteristic properties at definite intervals in the modem periodic table, when elements are arranged in increasing order of their atomic number.

(b) Periodic properties: The properties which appear at regular intervals in the periodic table are called periodic properties.

Periodic Properties are:

Atomic radii Ionisation potential
Electron affinity Electro negativity
Non Metallic and Metallic character.
Density Melting and boiling points.

(c) Periodicity of elements: Occurrence of elements with similar chemical properties at definite intervals when elements are arranged in increasing order of their atomic numbers is called periodicity of elements.

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