What can be determined if only the atomic number of an atom is known? (1) the total number of neutrons in the atom, only(2) the total number of protons in the atom, only(3) the total number of protons and the total number of neutrons in the atom(4) the total number of protons and the total number of electrons in the atom

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.

In saturated organic compounds, all the bonds between carbon atoms are called?

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123