What is the primary intermolecular force (IMF) for any diatomic molecule?

a. london dispersion

b. dipole-dipole

c. hydrogen bonding

d. covalent bond

D) Covalent Bond

Explanation:

London dispersion forces, dipole-dipole forces and hydrogen bonds are secondary weak forces that exist between molecules. For it to be called a molecule, it shows tha the bond present is a covalent bond. The covalent bond arises from the shaing of electrons between the atoms.

A typical example is the hydrogen molecule, H2. Both hydrogen atoms share the two electrons which signifies a covalent bond.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current