Recall all the models you described in task 1. Think about the results each model would predict for the experiment with hydrogen gas. Which models of the atom does the experimental evidence support? Explain why these models are compatible with the experimental results.

increased stability in the completion of fluorine's outer shell.

since electrons are negative the answer is neagtaive

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)