Wiktionary (0.00 / 0 votes) Rate this definition: floater (Noun) Agent noun of float; one who floats. floater (Noun) An employee of a company who does not have fixed tasks to do but fills in wherever needed, usually when someone else is away. floater (Noun)
25Mn-55 (the naturally occurring isotope) has 25 protons, 25 electrons and 30 neutrons, 25Mn-54 has 29 neutrons instead but is not a stable isotope. 25Mn-55 (the naturally occurring isotope) has 25 protons, 25 electrons and 30 neutrons, 25Mn-54 has 29 neutrons instead but is not a stable isotope.
With 131 particles in the nucleus, Iodine will have 78 neutrons. The atomic number of Iodine (53) never changes, and the atomic number of an element is the number of protons i â¦ t has. Therefore, 131 particles (protons or neutrons) minus 53 protons = 78 neutrons.