Respuesta :
Answer:
It is given that number of electrons is 11.
It is known that when an atom is neutral then the number of protons equals number of electrons. Also, atomic number means number of protons an atom holds.
Whereas mass number equals number of protons + number of neutrons. Thus, mass number of given atom is 11 + 13 = 24.
The symbol for this element will be as follows 24/11x . This atom sodium has atomic number 11 and mass number 24.
Therefore, symbol of this radioactive nuclide is as follows . A)Superscript 24 subscript 11 upper N a.
