225/88 Ra → 0/0Y + blank/88 Ra
The number in the box is the ____ and this form of ____ decay.
The number in the box is the atomic number and this form of decay is alpha decay.
The number in the box is the atomic number and this form of radioactive decay is alpha decay.
To determine the number in the box and the type of decay, let's break down the given information:
225/88 Ra → 0/0Y + blank/88 Ra
This is a nuclear equation representing a radioactive decay process where the element with atomic number 88 (Ra, radium) is undergoing decay.
First, let's focus on the left side of the arrow:
225/88 Ra
The superscript 225 represents the mass number, and the subscript 88 indicates the atomic number of radium.
Now, let's analyze the right side of the arrow:
0/0Y + blank/88 Ra
The nuclide with 0/0Y indicates that it is an isotope of element Y (represented by the symbol Y), and its superscript and subscript are both 0. This indicates that the nucleus does not contain any protons or neutrons.
The blank on the right side represents the mass number of the unknown isotope of radium (88 Ra).
Thus, the number in the box represents the mass number of the unknown isotope, and the type of decay in this nuclear equation is alpha decay.