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.
Aluminum has 13 protons (because of its atomic number). It has 14 neutrons, 13 electrons, and has 3 valence electrons (valence electrons are determined by looking at its group #). IF you make a model of an atom and it has 17 electrons, you wouldn't put 17 elecetrons around the atom, you would put its valence electron around it.