What is the maximum number of electrons that can be contained in the first, second, third, and fourth energy levels, respectively? express your answer as integers separated by commas. view available hint(s)

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

What term describes technology that operates on an atomic level