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.
The element sodium has an atomic number of 11 and a mass number of 23. How many protons, neutrons, and electrons does one atom contain? A) 11p+, 11e-, 12no B) 11p+, 12e-, 11no C) 11p+, 11e-, 23no D) 12p+, 12e-, 11no