See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

In 2 x y z Mg Al O , O ions are in ccp arrangement. Number of atoms in a unit cell of ccp 4  . Hence, there are 4 octahedral voids and 8 tetrahedra voids. Total positive charge charge on 2 3 1 1 Mg charge on Al 8 2 4 3 8 8 2           AITS-FT-III (Paper-1)-PCM(Sol.)-JEE(Advanced)/19 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 8 Mathematics PART – III SECTION – A