The main reason for the observed trend is that Explain your reasoning. additional oxygen atoms draw electron density away from more electrons in the valence shell add electron density to more electronegative elements weaken atoms with a larger atomic radius weaken

i think it is true since you can test the answer and can use observations to complete it.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year