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?

A 3-year-old boy is brought to the Emergency Room by his mother in acute respiratory distress. A loud high-pitched, inspiratory sound is heard loudest over the neck. Which of the following best describes this finding?

A 20 year old college student presents in the emergency room with the chief complaint of chest pain and dyspnea. She denies fever, chills, cough, sore throat and smoking. Findings suggest spontaneous pneumothorax. Which finding with palpation would support the diagnosis of pneumothorax?

A patient with a history of Type 2 DM presents with the chief complaint of leg pain associated with walking. On examination, decreased pedal pulses bilaterally are noted. The patient’s Ankle Brachial Index (ABI) is 0.8. What would be the most appropriate action?

Which of the following clinical manifestations is most consistent with peripheral arterial disease?