Question

There are more neutrons in Uranium-238 than in Uranium-235.

• A. True
• B. False

Answer 1

The correct option is A True

• Uranium-235 and Uranium-238 are isotopes of uranium.
• Isotopes have different mass numbers.
• atomic no = no of protons.
• Mass number = number of protons + number of neutrons.
• Since U-238 has a mass number (238) higher than that of U-235(235),
• because both have the same no of protons therefore the former has 238-235=3 neutrons more than that of the latter.
• Hence the given statement is true.