How many protons, neutrons, and electrons are in the following atoms? (a) ${ }^{84} \mathrm{Kr}\(, (b) \){ }^{200} \mathrm{Hg}\(, (c) \)^{59} \mathrm{Co}$, (d) \({ }^{55} \mathrm{Mn}\), (e) $^{239} \mathrm{U},(\mathbf{f})^{181} \mathrm{Ta}$.

Use the given mass number (A) and the atomic number (Z) determined in step 1 to calculate the number of neutrons (N) in each atom. The formula to calculate the number of neutrons is: \(N = A - Z\). #Step 3: Determine the number of electrons#

The atomic number (Z) of Krypton (Kr) is 36. #Step 2: Calculate the number of neutrons for Kr#

There are 36 electrons in a neutral Krypton atom (same as the atomic number). (b) \({}^{200} \mathrm{Hg}\), (c) \(^{59} \mathrm{Co}\), (d) \({}^{55} \mathrm{Mn}\), (e) \(^{239} \mathrm{U},(\mathbf{f})^{181} \mathrm{Ta}\) Following the same steps for the remaining atoms: (b) Mercury (Hg): Z=80, N=120, E=80 (c) Cobalt (Co): Z=27, N=32, E=27 (d) Manganese (Mn): Z=25, N=30, E=25 (e) Uranium (U): Z=92, N=147, E=92 (f) Tantalum (Ta): Z=73, N=108, E=73 So, the number of protons (Z), neutrons (N), and electrons (E) in each atom are: (a) Krypton (Kr): Z=36, N=48, E=36 (b) Mercury (Hg): Z=80, N=120, E=80 (c) Cobalt (Co): Z=27, N=32, E=27 (d) Manganese (Mn): Z=25, N=30, E=25 (e) Uranium (U): Z=92, N=147, E=92 (f) Tantalum (Ta): Z=73, N=108, E=73