# 39.3: Pre-Lab


1. Determine the number of unpaired electrons for each element contained in the kit.  Complete the unpaired electrons table.

Table $$\PageIndex{1}$$: Unpaired Electrons

Element

Symbol

Number Unpaired Electrons

Bromine

Br

Hydrogen

H

Carbon

C

Nitrogen

N

Oxygen

O

Chlorine

Cl

Iodine/Fluorine

I or F