Answer:
The reaction that is used to join fatty acid and glycerol is known as Lipogenesis.
Explanation:
Lipogenesis is an important anabolic pathway that helps in the biosynthesis of triacylglycerol by joining glycerol with fatty acid by ester linkage.Lipogenesis occur in liver and adipose tissue .
Lipogenesis takes place in our body to store excess fatty acid in form of triacylglycerol which is a complex lipid molecule.
Answer:

group 16 period 2 of the periodic table
note: that is not the electronic configuration, that is the Bohr model.
CnH2n since the equivalent unsaturation is equal with 1