Grade 12Physical Chemistry
How to calculate the no. of particles in hcp crystal lattice?
1 Answer
cool matrix
Total no. of particles in hcp lattice is 6. This is bcoz in a hcp structure there are three layers having two hexagonal sheets and a triangle between them. Of these three particles at the vertices of triangle of the middle sheet lie completely inside the lattice. Now the vertices of hexagon contain 6 particles but they r shared by another 6 lattice so contribution per lattice is 6*1/6 that is 1. but as i said earlier there r two hexahonal layers so 1*2= 2. and finally the centre of these two hexagonal layers also contain atoms that r shared by 2 lattices so contribution per lattice is 1/2 but as there r two hexagonal layrs so 1/2*2=1. So finally total atoms per hcp lattice will be (3+ 2+ 1) = 6. Hope u got else be free toask and kindly approve if u like it.
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago