Tentukan x,a,z,p,e dan n dari 16 0 8 15 N 7. 23 Na 11. 135 Ba 56

O (oksigen)
no massa (a) = 16
no atom (z) = 8
proton (p) = 8
elektron (e) = 8
neutron (n) = 16-8 = 8
N (nitrogen)
no massa (a) = 15
no atom (z) = 7
proton (p) = 7
elektron (e) = 7
neutron (n) = 15-7 = 8
Na (natrium)
no massa (a) = 23
no atom (z) = 11
proton (p) = 11
elektron (e) = 11
neutron (n) = 23-11 = 12
Ba (barium)
no massa (a) = 135
no atom (z) = 56
proton (p) = 56
elektron (e) = 56
neutron (n) = 135-56 = 79