(i) (a) Following is the schematic alignment of magnetic moments : (5 marks)
What type of magnetism is shown by this substance ?
(b) What type of stoichiometric defect is shown by (i) KCl (ii) AgCl ?
(ii) An element with density 11.2 g cm–3 forms a fcc lattice with edge
length of 4 10–8 cm. Calculate the atomic mass of the element.
(NA = 6.02 1023 mol–1)