Write nuclear symbols for isotopes of uranium that have the...

Write nuclear symbols for isotopes of uranium that have the following numbers of neutrons. The atomic number of uranium is 92. \begin{equation} \begin{array}{l}{\text { a. } 142 \text { neutrons }} \\ {\text { b. } 143 \text { neutrons }} \\ {\text { c. } 146 \text { neutrons }}\end{array} \end{equation}

Write nuclear symbols for isotopes of uranium that have the following numbers of
neutrons. The atomic number of uranium is 92.
\begin{equation}
\begin{array}{l}{\text { a. } 142 \text { neutrons }} \\ {\text { b. } 143 \text { neutrons }} \\ {\text { c. } 146 \text { neutrons }}\end{array}
\end{equation}

Key Concepts

Mass Number

The mass number is the sum total of protons and neutrons in an atom's nucleus. It is used in nuclear notation to distinguish between isotopes of the same element. Calculating the mass number (by adding the atomic number and the neutron number) is essential for identifying isotopic variations.

Neutron Number

The neutron number is the count of neutrons present in the nucleus of an atom. Changes in the neutron number lead to different isotopes of the same element. It plays a significant role in nuclear stability and influences properties such as radioactivity and mass.

Nuclear Notation

Nuclear notation is a concise way to represent the composition of an atomic nucleus in terms of its protons and neutrons. It typically places the mass number as a superscript on the top left and the atomic number as a subscript on the bottom left of the element symbol. This notation clearly communicates both the identity of the element and the total number of nucleons present.

Isotopes

Isotopes are variants of a particular chemical element that have the same number of protons (atomic number) but different numbers of neutrons. This difference in neutron number results in varying mass numbers and can affect the stability and nuclear properties of the isotopes, even though their chemical properties remain largely similar.

Atomic Number

The atomic number is the number of protons in the nucleus of an atom and uniquely identifies the chemical element. For any given element, like uranium, the atomic number is fixed. In nuclear symbols, the atomic number is often represented as a subscript and is crucial for determining the elemental identity.

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