Question

the element aluminium is written by the symbol 27/13 ALwrite the number of protons electrons ​

Answer 1

The number of protons an atom has in its nucleus is given by the atomic number. This means that any atom that is an isotope of aluminium will have 13 protons in its nucleus. Since you're dealing with a neutral atom, the number of electrons that surround the nucleus must be equal to the number of protons found in the nucleus. Therefore, the aluminium-27 isotope will have 13 electrons surrounding its nucleus. Finally, use the known mass number to determine how many neutrons you havemass number = no. of protons + no. of neutronsno. of neutrons = 27−13=14