Final answer:
The element with 92 protons is Uranium. Specifically, the isotope uranium-235 has 92 protons and 143 neutrons in its nucleus, as calculated by subtracting the atomic number from the mass number.
Step-by-step explanation:
The chemical element which contains 92 protons in its nucleus is Uranium (U). When discussing isotopes of uranium, the number of neutrons can vary while the number of protons, which defines the element, remains constant.
For the isotope uranium-235, the mass number is given as 235, and the atomic number is 92 (the number of protons). To find the number of neutrons in this isotope, you subtract the atomic number from the mass number: 235 - 92 = 143 neutrons.
An example to illustrate this: an isotope of uranium has an atomic number of 92 and a mass number of 235. Therefore, it has 92 protons and 143 neutrons in its nucleus. This specific uranium isotope is often denoted as 235U.