What is the energy of a photon (in eV) that has a wavelength of 633 nm?

If an electron has a principal quantum number (n) of 4 and an angular momentum quantum number (l) of 1, the subshell designation is             .

Fill in the orbital diagram for a ground state neon atom: How many unpaired electrons are in the 2p subshell?

If an electron has a principal quantum number (n) of 4 and an angular momentum quantum number (l) of 2, the subshell designation is             .

Fill in the orbital diagram for a ground state carbon atom: How many unpaired electrons are in the 2p subshell?

Fill in the orbital diagram for a ground state fluorine atom: How many unpaired electrons are in the 2p subshell?  

Electron affinity (EA) generally increases (ΔEA becomes more negative) from left to right on the periodic table. However, chlorine has a more negative EA than argon.  Which statement best describes why?

What is the energy of a photon (in eV) that has a wavelength of 379 nm?  

Which of the following is most likely to be found in a patient with chronic, severe gastroesophageal reflux disease (GERD)?

Which of the following is a sign of chronic occlusive peripheral arterial disease in the lower extremity?