Which Are Isotopes? an Atom That Has an Atomic Number

question 157

Multiple Choice

Which are isotopes? An atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has

• A)an atomic number of 21 and a mass number of 42.
• B)an atomic number of 20 and a mass number of 40.
• C)22 neutrons and 20 protons.
• D)22 protons and 20 neutrons.

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Definitions:

Aristocracy

A class of people holding exceptional rank and privileges, especially the hereditary nobility.

Governing Noble Elite

A social class of people with high status and power, often involved in the administration and ruling of a country or area.

Legitimacy

The recognition and acceptance of an authority, institution, or government as right and proper, often derived from law, custom, or consent.

Political Organization

Refers to the way a society creates and applies structures and systems of governance, including the distribution of power and the management of public affairs.