Uranium Is a Metallic Element That Is Used in Nuclear

question 49

Multiple Choice

Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. The vast majority of uranium found on Earth is in the form of uranium-238, an isotope with a mass number of 238, while the uranium that is used for nuclear reactors and weapons is uranium-235, an isotope with a mass number of 235.
-In a certain type of nuclear reactor, uranium-238 can be converted to plutonium-239, another radioactive element (with an atomic number of 94) that can be used to power nuclear reactions. Which of the following statements regarding uranium-238 and plutonium-239 is false?

• A) An atom of plutonium-239 contains one more proton than an atom of uranium-238.
• B) An atom of plutonium-239 contains 145 neutrons.
• C) An atom of uranium-238 has a smaller mass than an atom of plutonium-239.
• D) An atom of plutonium-239 contains two more protons and one fewer neutron than an atom of uranium-238.

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Definitions:

Standardized

The process of making something conform to a standard, often through testing, to ensure uniformity and comparability.

Oral Stage

The first stage in Freudian psychosexual development, occurring in the first year of life, where the mouth is the primary source of gratification and exploration.

Fixated

An obsessive or intense focus on an object, activity, concept, or person, potentially leading to dysfunctional behavior.

Adult

A person or organism that has reached full growth or maturity.