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**1. Homework Statement**

What is the likely formula for CH3NH?

**2. Homework 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.