Chemistry
Explain the term:
(a) periodicity in properties of elements
(b) periodic properties
(c) periodicity of elements
Periodic Table
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Answer
(a) Periodicity in properties of elements — The phenomenon of occurrence of characteristic properties of elements at definite intervals in the modern periodic table when elements are arranged in increasing order of their atomic numbers is called Periodicity in properties of elements.
(b) Periodic properties — The properties which appear at regular intervals in the periodic table are called periodic properties. Periodic Properties are:
- Atomic radii
- Ionization potential
- Electron affinity
- Electronegativity
- Non-Metallic and Metallic character.
- Density
- Melting and boiling points.
- Nature of oxides, oxy-acids, hydrides.
(c) Periodicity of elements — Gradual change in properties of elements when they are arranged in increasing order of atomic number in the periodic table is called the periodicity of elements.
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