   Chapter 31, Problem 24PE

Chapter
Section
Textbook Problem

In the following eight problems, write the complete decay equation for the given nuclide in the complete X Z A N notation. Refer to the periodic table for values of Z.α decay of 226Ra, another isotope in the decay series of 238U, FIrst recognized as a new element by the Curies. Poses special problems because its daughter is a radioactive noble gas.In the following four problems, identity the parent nuclide and write the complete decay equation in the X Z A N notation. Refer to the periodic table for values of Z.

To determine

αdecay equation of 226Ra

Explanation

Formula Used:

A = N + Z

Where A is atomic mass number

Z = Number of protons in a nucleus

In the expression below:

XZAN

Z = Number of protons in a nucleus

X = symbol for the element

We know that

A = N + Z

Where A is atomic mass number

The atomic mass ofR88226a138is 226 and

A = 226 Z = 88N = 138

Thus, </

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