How many protons, neutrons and electrons are present in  92238U?

The symbol 92238U represents an isotope of uranium.

1. The number before the element symbol (92) is the atomic number, which represents the number of protons in an atom. So, there are 92 protons in this isotope of uranium.

2. The number after the atomic number (238) is the mass number, which is the sum of protons and neutrons in an atom. To find the number of neutrons, subtract the atomic number from the mass number. So, 238 - 92 = 146. Therefore, there are 146 neutrons in this isotope of uranium.

3. The number of electrons in a neutral atom is equal to the number of protons. So, there are also 92 electrons in this isotope of uranium.

So, 92238U has 92 protons, 146 neutrons, and 92 electrons.