??? ?????, ??? ?????, ????? ??????, ??? ?????, ????? ?????, ?????, ???? ??? ????, ????? ?????, ?????? ??? ?????, ????? ??? ?????, ?????? ??? ?????, ????? ??? ????? ???? ????, ???? ??????, ????? ?? ?????, ??? ?????, ? rocksalt ????, ???? ??? ?????, ????? ?? ????, ????? ???? ?? ????, ????? ??? ?????, ion?? ??? ????, ? ion? ?? ?????, ????? ?????, ??? ???? ?????, ????? ?????, ?? ion ?????
2-3, 3-4, 4-6, 6-8, 8-10, 10-12 ????? ???? ??? ?????? 50 ?.???, 100 ?.?, 150 ?.?, 200 ?.?. .