Question

what element is the?

Explanation:

Step1: Analyze the nuclear reaction

In a nuclear reaction \(^{115}_{47}\text{Ag}
ightarrow? + ^{0}_{-1}\beta\), we use the conservation of atomic number (\(Z\)) and mass number (\(A\)).

Step2: Calculate the atomic number and mass number of the unknown element

For mass number (\(A\)): \(A = 115\) (since \(115=A + 0\)).
For atomic number (\(Z\)): \(47=Z+( - 1)\), so \(Z = 48\).

Step3: Identify the element

The element with atomic number \(Z = 48\) is Cadmium (\(\text{Cd}\)).

Answer:

\(^{115}_{48}\text{Cd}\)