Lots of students continuously asking me for making videos on numericals of chemistry for their exams . Recently i had started to make such videos.
Lets see “How to solve Numericals of class 12th chemistry chapter Solid state”
In this chapter numericals are mainly of 4 types –
(a) Calculation of Rank of the unit cell – Rank of the unit cell means the number of atoms actually present in a unit cell.
Rank of the unit cell = Number of site Occupied By Particles x Contribution of that site.
Remember the Number of site as – A unit cell consist of Corners(8) , Face center (6) , Edge center (12) , Body diagonal (4) , Face diagonal (12).
Contribution of the sites are – corner (1/8 ) , Face center (1/2 ) , Edge center (1/4 ) , Body Center & body diagonal (1).
See the following video for numericals based upon the rank of the unit cell –
(b) Relation between Edge length & Nearest neighbor distance (c) Edge length & radius (d) Density of unit cell.
All these Numericals can be learned on following link –