Atomic StructureAtomic Number and Mass Number1Choose the best answerIn the standard notation of a nuclide, the mass number and atomic number are written:AMass number at the upper left and atomic number at the lower left of the element symbolBAtomic number at the upper left and mass number at the lower leftCBoth numbers on the right side of the element symbolDBoth numbers as superscripts Like 0 Discuss 0Share
Atomic StructureAtomic Number and Mass Number2Choose the best answerThe nucleus of ⁴⁵₂₁E contains:A45 protons and 21 neutronsB21 protons and 24 neutronsC21 protons and 45 neutronsD24 protons and 21 neutrons Like 0 Discuss 0Share