同主族两种元素原子的核外电子数的差值可能是

1. A.
   6
2. B.
   12
3. C.
   26
4. D.
   30

A.6                  B.12                    C.26                   D.30

A.6                  B.12                   C.26                   D.30

A.6              B.12                    C.26                  D.30

A．6                      B．12                  C．26                  D．30

A.6                   B.12                    C.26                    D.30

A.6                 B.12                    C.26                   D.30

A.6                B.12                  C.26               D.30

)同主族两种元素原子的核外电子数的差值可能为(    )

A.6              B.12                    C.26               D.30