so here its given ..
mass no. = 56
and atomic no. = 26
=> in an atom there is an equal number of electrons and protons ...(e=p)..
=> also atomic number is the number of the electrons or protons ..
=> so here we got the no. of electrons and protons ..which is 26 ..
=> to find the number of neutrons in an atom , subtract atomic number from the mass number..i.e, 56 - 26 = 30 ...
=> so there are 26 electrons , 26 protons and 30 neutrons in the given atom ...
Hope it helps !!!
