Question

Write the symbolic notation of an isotope of an element having 8 protons, 8 electrons, and 9 neutrons

Answer 1

The number of protons uniquely identifies the element. This is not on the periodic table. Isotopic notationincludes the atomic number and the mass number. 8 17 This isotope of oxygen has 8 protons (atomic number), 8 electrons and 9 neutrons