8. Consider the molecule H2+ 3 , in which the three protons are arranged linearly. Let proton A be on the left, proton B be in the middle and proton C be on the right, with the distance between proton A and B the same as the distance between proton B and C. Here we will use the LCAO approach to construct the three lowest energy molecular orbitals. a. Write down the electronic Hamiltonian Hˆ elec. You may use the notation Kˆ e for the kinetic energy, but you must write down explicit forms for Ven and Vee.

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.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released

Which can be observed only in a microscopic view? a) structure of a muscle cell b) shape of a soybean plant c) foam insulation d) x-ray of a knee joint