Specify the values of Z, N. and A for the following nuclides: 40^K, 51^V, 130^Xe, 162^ Dy, 222^Rn, and 238^U.

A 6310 Ci 60^Co source used for cancer therapy is consider too weak to be useful when it's activity falls to 3500Ci. How long in years after it's manufacture does this happen?

Provide the hydrolysis reactions for UO22+.  Which hydrolysed uranium species will be prone to precipitation?

Write the products for the nuclear decay reaction of 192Pt (or Pt-192) which decays by emitting both a 78- BETA particle and GAMMA energy.

An old campfire is uncovered during an archaeological dig. Its charcoal is found to contain less than 1/1000 the normal amount of 14C . Estimate the minimum age of the charcoal, noting that 210 = 1024 .   Data from the appendices and the periodic table may be needed for these problems.

How to write balanced equation to represent the decay for lead-214 (meta stable )