If an Element Has 18 Protons and 20 Neutrons and 18

question 56

Multiple Choice

If an element has 18 protons and 20 neutrons and 18 electrons,which expression correctly identifies the element?

• A)argon-38
• B)argon-18
• C)argon-20
• D)calcium-38
• E)calcium-20

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Definitions:

Production Possibility Frontier

A curve depicting all maximum output possibilities for two or more goods, given a set of inputs.

Capital Stock

Refers to the total amount of physical assets owned by a company that are used in producing goods or services.

Technology

Application of scientific knowledge for practical purposes, especially in industry and improvements in tools, machines, techniques, and processes.

Economic Growth

The increase in the inflation-adjusted market value of the goods and services produced by an economy over time. It is conventionally measured as the percent rate of increase in real gross domestic product, or real GDP.