Electronic Configurations Of Elements And The Periodic Table

Charge on the proton is same as on the electron.
i.e., esu
or

The anion electrons) is isoelectronic with electrons). Isoelectronic species have same number of electrons. ,
and .

Number of protons = Atomic number =
Thus, the element is sulphur
Further, mass number = number of protons + number of neutrons
Since, number of electrons are greater than the number of protons, so it must be an anion (i.e., obtained by accepting two electrons Hence, the correct symbol of the species must be

The picture tube which is used in television is actually the cathode ray tube, in which cathode rays are generated from cathode and move towards anode

The cathode ray tube is a vacuum tube containing one or more electron guns and a fluorescent screen used to view images. It has a means to accelerate and deflect the electron beam on the screen to create the images.