Question

name the type of element which have the outermost shell incomplete

Answer 1

HEY.
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Two outermost shells incomplete  :

1.) Fe which has the atomic number 26,{2,8,14,2}with two electrons in the outermost  shell.

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