A line in the Lyman series of hydrogen has a wavelength of 1.03 x 10-1 m. Find the original energy level of the electron.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

The ground state electron configuration of a phosphorous atom has  three unpaired electrons. they're in the 3p sublevel. the electron configuration is: , for a total of  15 electrons.

The image seems to be behind the mirror, but nothing is really there.just took the test.