all of the above statements are true.

the distance between nuclei and electrons is at the most likely value.

none of the above statements are true.

the distance between the nuclei is at the most likely value.

the distance between the electrons is at the most likely value.

b.

c.

e.

a.

d.

The wave nature of the particle results in a single energy being allowed dependent upon how they are restricted.

They are particles and thus can have any energy, with sufficiently high energies allowing them to move unrestricted.

They are particles and thus can have any energy.

The wave nature of the particle results in a lowest energy being allowed dependent upon how they are restricted, with multiple discrete energies allowed above this lowest energy, with a high enough energy resulting in the particle becoming unrestricted.

The wave nature of the particle results in a lowest energy being allowed dependent upon how they are restricted, with any energy above this allowed.

All of the options are true. 

The azimuthal quantum number is indicative of the size of the orbital. 

The angular momentum quantum number is the same as the azimuthal quantum number. 

The symbol m_l represents the azimuthal quantum number. 

The magnetic quantum number is denoted by the symbol m_s and can take the values of ±1/2.