The element (}_{92)^238U has how many neutrons? 238 184 330 92 146

To determine the number of neutrons in an atom, we use the formula:<br /><br />\[<br />\text{Number of neutrons} = \text{Mass number} - \text{Atomic number}<br />\]<br /><br />For the element \({}_{92}^{238}U\):<br />- The **mass number** is \(238\) (the superscript).<br />- The **atomic number** is \(92\) (the subscript), which represents the number of protons.<br /><br />Now calculate the number of neutrons:<br /><br />\[<br />\text{Number of neutrons} = 238 - 92 = 146<br />\]<br /><br />### Final Answer:<br />The element \({}_{92}^{238}U\) has **146 neutrons**.<br /><br />Correct option: **146**