Using atomic symbols. Mass number and atomic number are two important pieces of information about an atom. ... Test your knowledge with this quiz on the nuclear model of the atom. Back to top.

The result is the $41 million, 22,000-ton Savannah, which, with its nuclear engine, will be capable of cruising without refueling for 350,000 miles over 3½ years.

The atom with the highest atomic number currently discovered or synthesized is oganesson, with an atomic number of 118. Its symbol on the periodic table is Og.

The atomic mass is usually measured in atomic mass units (amu), where 1 amu is defined as one-twelfth of the mass of a carbon-12 atom. >Mass of Neutron = 1.008 amu >Mass of Proton = 1.00727647 amu ...