03.Classification of Elements and Periodicity in Properties

N.C.E.R.T Chapter 03

N.C.E.R.T Chapter 03 Solution

Assignment

Answers of assignment are given at the end of each assignment with complete solutions.

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 Lect 01: Historical Development

 Lect 02: Modern Periodic Table

 Lect 03: How to Find Group,Period & Block of any element

 Lect 04: Atomic Radius

Lect 05: Ionisation Energy

Lect 06: Electron Affinity

Lect 07: ElectroNegativity

• appreciate how the concept of grouping elements in accordance to their properties led to the development of Periodic Table. • understand the Periodic Law; • understand the significance of atomic number and electronic configuration as the basis for periodic classification; • name the elements with Z >100 according to IUPAC nomenclature; • classify elements into s, p, d, f blocks and learn their main characteristics; • recognise the periodic trends in physical and chemical properties of elements; • compare the reactivity of elements and correlate it with their occurrence in nature; • explain the relationship between ionization enthalpy and metallic character; • use scientific vocabulary appropriately to communicate ideas related to certain important properties of atoms e.g., atomic/ ionic radii, ionization enthalpy, electron gain enthalpy, electronegativity, valence of elements

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