Question

состав атома 

 Li,Na,K,Rb,Cs,Fr

найти Z-?

          P-?

          N-?

          E-?

Answer 1

Li   Z=3          Na   Z=11               K     Z=19               Rb   Z=37

      P=3                P=11                      P=19                      P=37

      N=7-3=4         N=23-11=12            N=39-19=20            N=85-37=48

 Cs   Z=55                Fr    Z=87

       P=55                        P=87

       N=133-55=78            N=223-87=136