1. The problem statement, all variables and given/known data What is the likely formula for CH3NH? 2. Relevant equations We need to find the value of ? in order to have 8 valence electrons on the outer shell of the compound. 3. The attempt at a solution I could do less "complex" ones, such as GeCl? Ge has 4 valence elctrons, therefore it needs 4 more, and so the value of ? is 4. I am not sure I understand how to do the same for CH3NH?. The textbook give Ch3NH2 as the answer. Thank you for any explanation you can give me.