CaS exists in a cubic close packed arrangement of `S^(2-)` ions in which `Ca^(2+)` ions occupy 1/2 of the available tetrahedral holes. How many `Ca^(2+)and S^(2-)` ions are contained in the unit cell?

How many Ca^(2+) and Cl^(-) ions are present in one mole of CaCl_2 ?

A solid crystallinses as cubic close packing of O^(2-) ions. A^(x+) ions occupy 25% of the tetrahedral voids and B^(y+) ions occupy 50% of the octahedral voids. The suitable values of x and y are:

Crystal structure of the oxide AB_(2)O_(4) is bassed on the cubic close packed (ccp) array of O^(2-) ions, with A^(2+) ions occupying some tetrahedral voids and B^(3+) ions occupying some octahedral voids. If a crystal of this oxide contains 1 mol AB_(2)O_(4) formula unit, then calculate (1) total number of voids in the crystal (2) total number of tetrahedral voids occupied by A^(2+) ions (3) total number of octahedral voids occupied by B^(3+) ions.

No of Ca^(2+) ion present in 1 gm-iorn Ca^(2+) is?

Which reagent is used to analyse Ca^(2+) and Mg^(2+) ions quantitatively ?

Ca^(2+) ion is isoelectoronic with