Silicon has crystalline structure like diamond. If the shortest distance between two silicon atoms is `100sqrt(3)` pm , the density of silicon is:
[Si = 30, N_(A) = 6 xx 10^(23)]`

What is the approximate shortest internuclear distance between any two carbon atoms in diamond if it has density equal to 2gm//ml? [N_(A) = 6xx 10^(23)]

A specimen of silicon is to be made p-type semiconductor. For this one atom of indium, on an average is doped in 5xx10^(7) silicon atoms. If the number density of silicon is 5xx10^(28) "atoms"//m^(3) , then the number of acceptor atoms per cm^(3) is

A metal exist as face centered cubic crystals. If the atomic radius is 100sqrt(2) pm and the density of metal is 12,500 kg//m^(3) , the metal is :9Given : Ca = 40, Co= 58.9 , Sn = 119.8, Pb= 208.4, N_(A) = 6 xx 10^(23)

Sum of the number of oxygen shared in between two silicon atoms in Si_(3)O_(9)^(6-) and Si_(3)O_(10)^(8-) is:

Sum of the number of oxygen shared in between two silicon atoms in Si_(3)O_(9)^(6-) and Si_(3)O_(10)^(8-) is:

A sample of pure silicon is doped with a trivalent impurity whose each atom creates a hole the concentration holes in pure silicon is 7xx10^(15) holes per cubic metre and density of silicon is 5xx10^(23) a pure silicon sample by a factor of 120 calculate approximately the proportion in which the impurity is added