Problem: Fill in the requested information. a) How many protons, electrons and neutrons does tin(IV)-120 have?   b) Write the atomic symbol for the tin isotope in a).   c) What is the mass number of the isotope of rubidium that has 49 neutrons?   d) Which neutral element could have an isotope with 38 neutrons for a mass number of 72?

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Problem Details

Fill in the requested information.

a) How many protons, electrons and neutrons does tin(IV)-120 have?


b) Write the atomic symbol for the tin isotope in a).


c) What is the mass number of the isotope of rubidium that has 49 neutrons?


d) Which neutral element could have an isotope with 38 neutrons for a mass number of 72?

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