The atomic emission spectra of a sodium atom on earth and of a sodium atom in the sun would be

Missing question:

A the same

B different from each other

C the same as those of several other elements

D the same as each other only in the ultraviolet range.

Answer is: A. the same.

Differente gravity or no atmosphere on Sun don't affect emission spectra of elements.

Emission spectrum of a chemical element is the spectrum of frequencies emitted due to an atom making a transition from a high energy state to a lower energy state. Each element's emission spectrum is unique.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.