We Can Represent Atoms by Listing the Number of Protons

question 43

Multiple Choice

We can represent atoms by listing the number of protons, neutrons, and electrons-for example, 2p⁺, 2n⁰, 2e⁻ for helium. Which of the following represents the ¹⁸O isotope of oxygen?

• A) 7p⁺, 2n⁰, 9e⁻
• B) 8p⁺, 10n⁰, 8e⁻
• C) 9p⁺, 9n⁰, 9e⁻
• D) 10p⁺, 8n⁰, 9e⁻

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Definitions:

Stage Theory

A theory of development characterized by hypothesizing the existence of distinct periods of life. Stages follow one another in an orderly sequence.

Distinct Periods

Separate or clearly differentiated intervals of time or stages in a process or series of events.

Binet

is associated with Alfred Binet, a French psychologist best known for developing the first intelligence test, aimed at identifying students needing educational assistance.

Standardized Intelligence Test

A psychometric test designed to systematically measure and evaluate intellectual capabilities based on a uniform set of criteria.