Apure silver ring contains 2.10×1022 silver atoms. part a how many moles of silver atoms does it contain?

The number of moles of silver atoms it contain =0.0349 moles

calculation

by use of Avogadro's law constant

that is 1 mole= 6.02 x10^23 atoms

               ?      = 2.10 x10 ^22 atoms

=(2.10 x10^22 atoms x 1 moles)/(6.02 x10^23 atoms) =0.0349 moles

is there multiple choice answers?

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.