Mean in German: bedeuten, meinen. Mean if a synonym is cruel would be 'gemein'. Just like English the word 'mean' has two meanings. You might 'mean'(intend) to say that someâ¦one is a 'mean' (cruel) person.
The number of electrons in the first two levels of an atom of sodium is as follows:Level 1 contains a single s sublevel = 2 electronsLevel 2 contains s and p sublevels = 2 + 6 = 8 electrons. So far, levels 1 and 2 have given us 10 electrons.
When an electron is ejected from a sodium atom we have a Na+ ion. We can write an equation for this process: Na(g) Na+(g) + e-. This is the equation for the ionization of sodium and the energy required is the first ionization energy for sodium. The wavelength of a photon of light with this energy can be calculated.