Lithium has a work function of 2.3ev. If 400nm light is incident on it, what is the maximum kinetic energy ? Chemistry Bohr Model of the Atom Calculations with wavelength and frequency
No. A comma precedes such as when what follows is an example of whatever went before. In this case, it is nonrestrictive. (For nonrestrictive constructions: use a comma.).
Terminal Points. The general rule is that a sentence ends with only one terminal punctuation mark. There are three options: the period, the question mark, and the exclamation point. In less formal writing, an interrupted sentence may end with an em dash (â), or a sentence that trails off may end with an ellipsis (. . .). , Comma.