Question

Complete the following statement. All isotopes of Uranium have

• A. the same atomic number and the same mass number.
• B. different atomic numbers but the same mass number.
• C. different atomic numbers and different mass numbers.
• D. the same atomic number but different mass numbers.
• E. no electrons.

Answer 1

The correct option is D the same atomic number but different mass numbers.

Isotopes of the same element have same atomic number but different mass number.

Isotopes of uranium : ${}_{92}^{235}U$ and ${}_{92}^{238}U$