Is oatmeal Dioxide matter??? HEL

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.

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table