Question

to draw a lewis dot model you have to know. select all correct options. the period an element is in. the number of energy levels an atom has. the number of valence electrons an atom has. the group an element is in.

Explanation:

A Lewis - dot model represents the valence electrons of an atom. The group number of an element in the periodic table is related to the number of valence electrons. Also, the number of energy levels is related to the period number, but the key factor for drawing a Lewis - dot model is the number of valence electrons which can be determined from the group an element is in. Knowing the period or the number of energy levels is not directly essential for drawing the dot - model.

Answer:

C. the number of valence electrons an atom has, D. the group an element is in