How many energy levels does hydrogen and helium have
Helium ion Spectrum Explained
The He+ ion is just like a hydrogen atom with two units of charge in the nucleus. Since the hydrogenic energy levels depend upon the square of the nuclear ...
Answer
Hydrogen and helium are in the first row, or period, on the periodic table. Therefore, the first energy level can have a total of two electrons. The second energy level can have eight electrons.
Is this lesson helpful?
