The answer is beta oxidation. It is a process in which molecules
particularly fatty acids are cracked down in the prokaryotes’ cytosol and
in the mitochondria in eukaryotes to produce acetyl-CoA,
which goes in the citric acid cycle, <span>FADH2</span>, and NADH which are
co-enzymes that are cast-off in the electron transport chain. The major response
site is the beta-carbon from the thioester carbon.
This question is asking for an element with 5 valence electrons. Just go to the row it is in (excluding transition metals) and count over. The answer would be c. P