What does the following element description actually mean? $\begin{array} { c }
238 \
92
\end{array}$ U
A)a uranium atom with 92 protons and 146 neutrons
B)a uranium atom with 238 neutrons and 92 protons
C)a uranium atom with 92 neutrons and 238 protons
D)a uranium atom with 92 neutrons and 146 protons
E)none of the above

Question

What does the following element description actually mean? $\begin{array} { c } 
238 \
92
\end{array}$ U
A)a uranium atom with 92 protons and 146 neutrons
B)a uranium atom with 238 neutrons and 92 protons
C)a uranium atom with 92 neutrons and 238 protons
D)a uranium atom with 92 neutrons and 146 protons
E)none of the above

Quizplus · Accepted Answer

The element description indicates a uranium atom (U) with an atomic number of 92 (indicating 92 protons) and a mass number of 238. The mass number is the sum of protons and neutrons, so with 92 protons, there must be 146 neutrons (238 - 92 = 146).

What Does the Following Element Description Actually Mean 23892\begin{array} { c } 238 \\92\end{array}23892​

What Does the Following Element Description Actually Mean $\begin{array} { c } 238 \\92\end{array}$