Question

Name the type of element which have their 2 outermost shell incomplete

Answer 1

No element exists.

Only one outer shell can be incomplete.

Thanks.
Tripathy.

Answer 2

Helloo!!

Two outermost shells incomplete  :
Fe which has the atomic number 26,{2,8,14,2}with two electrons in the outermost  shell.

Mn which has the atomic number 25,{2,8,13,2}with two electrons in the outermost   shell.  

hope it helps!!