Using your data compare atomic number with total number of spectral lines. Is there a pattern? What might explain the presence or absence of a pattern based on what you know about atoms, electrons, and emission spectra? (I'm greatly sorry if the data is wrong and or confusing I'm trying my best here, I just need help with two questions. I will send the second one after this is answered)

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

When you go to ask a qustion there will be a picture of a paper clip looking thing and then it will pop up your files and you click on the imajes and then you up load it

This question is incomplete and not physics but i'm  willing to if you can give a better question

Hellothe asnwer is b.have a nice day