0! because you walked back in forth in diferent direcions
Answer is <span>C: It's appearance changed.</span>
Electronegativity measures how much an atom likes to pull electrons away from another one. Ionization energy measures how much an atom doesn't want to lose electrons. As an atom that wants to gain electrons will clearly not want to lose electrons, these trends are basically identical.
The variable is what changes during an experiment. Hopefully this helped! :)