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.
Number of Neutrons = Mass Number - Atomic Number _____... Hydrogen Protons: 1 Electrons: 1 Neutrons: 1-1=0 Helium Protons: 2 Electrons: 2 Neutrons: 4-2=2 Lithium Protons: 3 Electrons: 3 Neutrons: 7-3=4 Beryllium Protons & Electrons: 4 Neutrons: 9-4=5 Boron Protons & Electrons:5 Neutrons: 11-5=6 Carbon Protons & Electrons:6 Neutrons: 12-6=6 Nitrogen Protons & Electrons:7 Neutrons: 14-7= 7 Oxygen