The recruitment, selection, employment, and training of apprentices during their apprenticeship shall be without discrimination because of race, color, religion, national origin, or sex. Job Readiness. Applicants must be: 1  physically able to perform the work of the trade.  be prepared to work at extreme heights.
Best Answer: neutrons + protons = 23 ... Sodium Mass Number ... Na Mass Number ... Sodium (Na) Sodium has an atomic number of 11 and a mass of about 23g ... aprox ...
All isotopes of an element will always have the same number of protons. The UPPER number represents the MASS NUMBER, which is number of protons PLUS number of neutrons. This is unique for every isotope. Magnesium 24 has 12 neutrons, Magnesium-26 has 14 neutrons and Magnesium-30 has 18 neutrons.