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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Definitions:

Footballs

Spherical objects used in the game of football (soccer) or oval-shaped objects used in American football, both designed for being kicked, thrown, or carried to score points.

Labor

The physical and mental effort used in the production of goods and services.

Physical Capital

Manufactured productive resources, such as buildings and machines; often referred to simply as “capital.”

Factor Market

A marketplace for the services of a factor of production, such as labor, capital, or land.