Question

Which element have the same lewis dot structure as silicon ?

Answer 1

You just look at what vertical row that silicon is, and every element that is in the same vertical row as silicon will have the same lewis dot structure...and this applyes for most elements on the periodic table of elements.                        
 - C, Ge,Sn, Pb:                                                                                                  
all these elements are in the same column, and therefore have the same number of valence electrons

Answer 2

Answer:

Carbon (C), Germanium (Ge), Tin (Sn), Lead (Pb), and Flerovium (Fl)

Explanation:

Silicon is the element of fourteenth group and third period. The electronic configuration of Silicon is - 2, 8, 4 or $1s^22s^22p^63s^23p^2$

There are 4 valence electrons of silicon.

Only the valence electrons are shown by dots in the Lewis structure.  

As, stated above, there are four valence electrons of silicon, so in the Lewis structure, four dots are made around the silicon (Si) symbol.

Similarly, the other members of the group 14 have four valence electrons and will have same valence electrons as silicon.

So, the elements are:- Carbon (C), Germanium (Ge), Tin (Sn), Lead (Pb), and Flerovium (Fl)