How many moles of pb(no3)2 are there in a 10.0ml of a .10 m solution?

There are main groups in the modern periodic table of elements

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.

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from