Consider a hydrogen atom in the ground state. what is the energy of its electron?
which is, -2.1799 x10^-18 j
now consider an excited-state hydrogen atom. what is the energy of electron in the n=2 level?

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

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

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d