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Identifying Element from Number of Protons and Neutrons

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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.

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https://brainmass.com/chemistry/elements/identifying-element-number-protons-neutrons-18015

Solution Preview

Number of protons = number of electrons

Hence, the atomic number = 120

mass = ...

Solution Summary

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number of protons, neutrons, and electrons

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