an element has atomic mass 32 and its nucleus has 16 neutrons. to which group of periodic table does it belong? explain. Share with your friends Share 1 Geetha answered this Element has atomic mass of 32 That is number of protons + number of neutron = 32Number of neutron = 16Number of proton = 32 - 16 = 16So atomic number is = 1616 means the electronic configuration is 2,8,6Thus it belong to 16th group (10+6) , as its valence shell has 6 electron.That is the element belong to oxygen group. 3 View Full Answer