The electron configuration of the valence electrons of an atom in its ground state is ns2np3. this atom is a group element.

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

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.

When a scientific theory has been tested and proved by the scientific community, it becomes a law