How Can a Nucleus Be Described by Particular Values of A

question 13

Multiple Choice

How can a nucleus be described by particular values of A, Z and N when the mass of the nucleus is not equal to Zmp + Nmn, where mp and mn are the masses of free protons and neutrons?

• A)A, Z and N have no intrinsic meaning.
• B)A, Z and N describe the number of particles of given types, but mass has no meaning when part of the mass is elsewhere in the universe.
• C)A, Z and N describe the number of particles an ideal rather than a real nucleus would have.
• D)A, Z and N describe the number of particles of given types in the nucleus, but not their masses in a bound state.
• E)A, Z and N describe the number of particles of given types in the nucleus since the missing mass consists of electrons that are also present in the nucleus.

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Electronic devices designed to improve the hearing of those with hearing loss by amplifying sound.

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A significant reduction in brain tissue, which can result from various conditions such as Alzheimer's disease, trauma, or other neurodegenerative diseases, leading to cognitive decline and functional impairment.

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The excessive or inappropriate use of drugs for non-medical purposes, which can lead to physical, social, and psychological harm.