Question

Uranium 235 and uranium 238 are isotopes.
What does the numbers above indicate, the atomic or mass number? Explain your
answer.
Answer gets 20 points

Answer 1

Answer:

Write the symbol for this isotope. The atomic number of uranium (see periodic table) is 92, and the mass number of the isotope is given as 238. Therefore, it has 92 protons, 92 electrons, and 238 — 92 : 146 neutrons.