To calculate the formal charge of nitrogen in the nitrogen dioxide NO2 molecule, we will use the following formula:Formal charge = Valence electrons of the atom - Non-bonding electrons - 1/2 x Bonding electrons First, let's determine the number of valence electrons, non-bonding electrons, and bonding electrons for nitrogen in NO2.1. Valence electrons of nitrogen N : Nitrogen is in group 15 of the periodic table, so it has 5 valence electrons.2. Non-bonding electrons: In the NO2 molecule, nitrogen forms two bonds, one with each oxygen atom. One of these bonds is a double bond, and the other is a single bond. Nitrogen does not have any non-bonding lone pair electrons in NO2.3. Bonding electrons: Nitrogen forms one double bond 2 pairs of electrons and one single bond 1 pair of electrons in NO2. So, there are a total of 3 pairs of bonding electrons, which means there are 6 bonding electrons.Now, we can plug these values into the formula:Formal charge of N = 5 - 0 - 1/2 x 6 Formal charge of N = 5 - 0 - 3Formal charge of N = 2Therefore, the formal charge of nitrogen in the nitrogen dioxide NO2 molecule is +1.