(CH3)2.CBr. CH3
What it’s iupac name?

2 - Bromo - 2 - Methyl Propane

Explanation:

The structure of the compound is given in the attached image as;

The longest chain is; CH₃--C--CH₃ = 3 carbon atoms = Propane

It has two substituents on the middle carbon = CH₃  and  Br = 2 - Bromo- and 2 - Methyl

The IUPAC name is given as; 2 - Bromo - 2 - Methyl Propane

idk what the question is about

a corroding iron, if that's one of your choices