Which statement about the electron-cloud model is true? O It is the currently accepted atomic model.
It can easily be replaced by existing models.
O It specifies the location and momentum of an electron.
O It does not explain the formation of emission lines.

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

2. how is heavy water different from normal water

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.