An element with molar mass 2.7×10-2 kg mol-1 forms a cubic unit cell with edge length 405 pm. If its density is 2.7×103 kg m-3, what is the nature of the cubic unit cell?
question : An element with molar mass 2.7×10-2 kg mol-1 forms a cubic unit cell with edge length 405 pm. If its density is 2.7×103 kg m-3, what is the nature of the cubic unit cell ?
Key points to answer this question :
First of all we need to calculate the number of atoms present in the unit cell (Z) =
Then find the type of the cubic unit cell on the based of number of Z , as follows –
If Z = 1 then This will simple cell (SC)
If Z = 2 then This will Body-centered cubic (BCC)
If Z = 4 then This will be Face-centred Cubic Unit Cell (FCC)
solution : given data –
Molar mass of the given element , M = 2.7×10-2 kg mol-1
Edge length of given cubic unit cell , a = 405 pm
हिंदी माध्यम नोट्स
Class 6
Hindi social science science maths English
Class 7
Hindi social science science maths English
Class 8
Hindi social science science maths English
Class 9
Hindi social science science Maths English
Class 10
Hindi Social science science Maths English
Class 11
Hindi sociology physics physical education maths english economics geography History
chemistry business studies biology accountancy political science
Class 12
Hindi physics physical education maths english economics
chemistry business studies biology accountancy Political science History sociology
English medium Notes
Class 6
Hindi social science science maths English
Class 7
Hindi social science science maths English
Class 8
Hindi social science science maths English
Class 9
Hindi social science science Maths English
Class 10
Hindi Social science science Maths English
Class 11
Hindi physics physical education maths entrepreneurship english economics
chemistry business studies biology accountancy
Class 12
Hindi physics physical education maths entrepreneurship english economics