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Calculate the effective nuclear charge, Zeff, for sulfur which has 16 protons given Zeff = Z – S where Z is the atomic number and S is the number of shielding electrons. Hint: writing the electron configuration can help determine the number of shielding electrons.

The placement of the electrons in the 3p-orbital in question #15 follows which rule or principle?

The partial Lewis structure that follows is for a hydrocarbon molecule. In the full Lewis structure, each carbon atom satisfies the octet rule, and there are no unshared electron pairs in the molecule. How many hydrogen atoms are in the molecule C=C? Hint: Each carbon atom will have 4 bonds.

Which group of the following elements only contains elements from the d-block?

Using a molecular orbital diagram, what is the bond order for N2?

Which molecular orbital are the electrons in that account for O2 being paramagnetic?

Which of the following best describes the 1887 Dawes Severalty Act?

How many shared electrons occur between the two oxygen atoms in the diatomic molecule of O2? Hint: draw the Lewis dot structure and count the number of electrons between the 2 oxygen atoms.

How many orbitals are in a d-level subshell?

A foot doctor is investigating a new orthopedic insert for people who suffer from intense heel pain. He wants to see if the new orthopedic insert works better than the current orthopedic on the market. He takes a random sample of 10 patients from his practice and want to give them one of the new orthopedic to try on one foot and one of the current orthopedic to try on their other foot (he will randomly decide which foot gets the new orthopedic by flipping a coin…heads and it goes on the right foot, tails and it goes on the left foot.) He will measure and compare the difference in their heel pain for each of their feet. What type of experimental design is he using?