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:

Connections

The relationships or links between individuals or entities that can provide mutual benefits in personal or professional contexts.

Strategic Alliance

An agreement between entities to pursue a set of agreed objectives while remaining independent organizations.

Motorola

A multinational telecommunications company known for its innovations in mobile phones and communications infrastructure.

Transaction Management

Building and promoting products in the hope that enough customers will buy them to cover costs and earn profits.