oh = octahedral td = tetrahedral CN = co-ordination number
My problem is that, that why it is not possible to have a void with CN = 5 ?
My reasoning is:
According to the definition of CN i.e. the number of nearest neighbors of a particle (here a void because we are talking about it).
In the following figure if we treat silver sphere as the void then we say that it is a td void.
But if we place a sphere over this td void then we generate a void whose distance from center of void to the center of all the 5 spheres is equal. And so making the CN = 5
So kindly help me in understanding that why a void with CN = 5 not possible.