How do you find an electron affinity?

Explanation:

Electron affinity is the measure of an atom 's tendency to form a negative ion. Electron affinity can be measured by the amount of energy released when an electron is added to an atom to form a negative ion. When forming a negative ion, an atom undergoes the following reaction:: atom + electron (e -) -> negative ion + energy

c (diamond),

sio2 (quartz)

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.