sodík -8 -8 -9 -9 -9 -9 Na-22 1,000 2,1.10 1,000 1,5.10 8,4.10 5,5.10 3,7.10 3,2.10 -9 -9 -9 -10 -10 -10 Na-24 1,000 3,5.10 1,000 2,3.10 1,2.10 7,7.10 5,2.10 4,3.10