In Beryllium crystal the layers of atoms are being arranged in a pattern of ABABAB-type
Name the close packed arrangement.

In Beryllium-crystal the layers of atoms are being stacked In a pattern of ABABAB- type of arrangement.Calculate the number of tetrahedral and,octahedral voids present in 0.5 mol of Be crystal

A metalic element crystallizes into a lattice containing a sequence of layers ABCABC. Name the type of close packing in this element.

A crystal has an ordered arrangement of constituent particles: Define the term unit cell.

The unit cell dimensions of a particular crystal system is given below. a=b=c,alpha=beta=gamma !=90^@ .In a crystalline solid, the atom A are arranged in CCP array and atom B occupy all the octahedral voids and half of the tetrahedral voids. What is the formula of the compound ?

Assertion : When an atom crystallizes in either fcc or hcp arrangement, density of the solid remains same in both the arrangements. Reason : Both fcc and hcp have same value of limiting packing fractions.

Two equal and opposite charge +q and -q are separated by a small distance 2a. Br Name this arrangement.

How can the two flourine atoms attain an octect arrangement?

In crystalline solids, atoms or molecules are arranged in a regular and long range order fashion in a three dimensional pattern. Q. The fraction of Ni^(2+) and Ni^(3+) ions in Ni_(0.98)O_(1.00) is: