Chapter SH, Problem 20.3APP

To determine

To calculate: Ratio of neutrons to protons in the given nucleus.

Answer to Problem 20.3APP

Ratio of neutrons to protons is $146:95$ .

Explanation of Solution

Given:

The following nucleus:

  $\text{A}\text{m}$

Formula used:

The relation is

  $\text{Mass number = number of protons + number of neutrons}$

Calculation:

According to the given nucleus,

Mass number = $241$

Atomic number = $95$

Since number of protons is equal to atomic number, number of protons is $95$ .

Number of neutrons is calculated as:

  $\begin{array}{l}\text{Mass number = number of protons + number of neutrons}\\ \text{241= 95 + number of neutrons}\\ \text{number of neutrons = 241}-95=146\end{array}$

Ratio of neutrons to protons is calculated as:

  $\frac{\text{Number of neutrons}}{\text{Number of protons}}=\frac{146}{95}$

Conclusion:

Ratio of neutrons to protons is $146:95$ .