A neutral atom of aluminum has a mass number of 27 and an atomic number of 13. How many electrons does it have?
(a) How many electrons are there in each atom of the element ?
(b) How are these electrons distributed in the various energy levels ?
An element has an atomic number of 13 and an atomic mass of 27. (a) How many electrons are there in each atom of the element? (b) How are these electrons distributed in the various energy levels?