What orbitals would be present in principal energy level two? 2p only
2s only
2s, 2p, 2d
2s, 2p

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 approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

How are isotopes of the same chemical element alike? how are they different?