An unknown element which has 120 protons and 174 neutrons, has the name ultimatum and symbol Ul.
Give the atomic number of ultimatum and give the full symbol for the above isotope.© BrainMass Inc. brainmass.com July 20, 2018, 6:31 pm ad1c9bdddf
Number of protons = number of electrons
Hence, the atomic number = 120
mass = ...
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