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Physical Properties : Part 2 ( in Hindi)
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In this video, Anirudh Walia discussed physical properties of group 14 elements i.e. Atomic and ionic radius, ionisation energy, electronegitivity, allotropy, density.

Anirudh Walia is teaching live on Unacademy Plus

Anirudh Walia
Chemistry Educator || Famous for Inorganic Tricks

Unacademy user
mam you are not few topics - breach of contempt of the, sources of privileges ( Parliament chapter)
SIR electonegativity value smjh nhi aai plz dbl explain kr dijiye
Sir kya is group ke sare element +2 oxidation state dekhate hai
sir aap chapterwise chemistry karwao.chapter 4 ke baad chapter 5,6,7,8,9,10, serialwise karwao.p block baad me karwana.
sir 5 chapter karwao
  1. (vii) Ionisation enthalpy It decreases from C to So. For Pb. it ie slightly higher than Sn. (vii) Electronegativity values The value decreases from C to Pb but not in a regular manner probably due to filling of d-orbitals III and Sn and f- orbitals In Pb. (ix) Catenation The greater the strength of element-element bond. the greater is the strength of catenation C> Si>Ge Sn> Pb (catenation). (x) Allotropy All the elements of this group except Pb exhibit allotropy. In cold countries white tin changes to grey tin and results in decrease in density. This is called tin disease or tin plague. (xi) Valency All elements exhibit tetra valency. In case of carbon, 406 kJ mol of energy is required for promotion of 2s - electron to 2p.

  2. Formation of two extra bonds provide this energy. (xii) Atomic and ionic radii Both increase from C to Pb. (xii Multiple bonding Carbon forms pa pr bonds with itself and with S, N and O. Other clements show negligible tendency of this type due to their large size. Others form dr - pt multiple bonds.

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