Answer
Please see the work below.
Work Step by Step
We know that $N^{15}_{7}$ has 7 protons, 8 neutrons and 7 electrons.
$S^{34}_{16}$ has 16 protons, 17 neutrons and 16 electrons.
$Cu^{63}_{29}$ has 29 protons, 34 neutrons and 29 electrons.
$Sr^{84}_{38}$ has 38 protons, 46 neutrons and 38 electrons.
$Ba^{130}_{56}$ has 56 protons, 74 neutrons and 56 electrons.
$W^{186}_{74}$ has 74 protons, 112 neutrons and 74 electrons.
$Hg^{202}_{80}$ has 80 protons, 122 neutrons and 80 electrons.
