Which two characteristics are used to classify stars on the Hertzsprung-Russell diagram?

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

Ineed ! i have no clue how to do this problem.

Why do electrons further from the nucleus have more energy