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.
Best Answer: you are correct that protons determine the element's identity. Mg-24 and Mg-26 both have 12 protons but the 24 and 26 are the number of protons plus neutrons. Mg-24 has 12 protons and 12 neutrons, while Mg-26 has 12 protons and 14 neutrons. elements that have the same number of protons but different numbers of neutrons are called isotopes. Mg will always have 12 protons...if you change the number of protons, you change the element. Mg-24 and Mg-26 are two different isotopes of magnesium.