
Concept explainers
Interpretation: The statement which is not discussed in Dalton ‘s atomic theory needs to be determined.
Concept Introduction: Theory is a group of connected ideas or concepts intended to describe something. It involves question- “why” or “how anything/ something happens. It is based on inference.

Answer to Problem 3STP
Correct answer: The correct option is D.
Explanation of Solution
Reason for correct option:
Dalton’s atomic theory was proposed by John Dalton. According to the Dalton’s atomic theory, matter is composed of tiny particles, all atoms of certain element are identical, compound contains more than one element. In this theory, atoms were tiny, hard spheres that vary in size as well as mass, but can’t be split into smaller pieces. So, Dalton did not discuss any of them Isotopes, ions, protons and electrons. He thought that all atoms were identical.
Reasons for incorrect options:
Option A: Dalton did not discuss about isotopes, ions, protons and electrons in his theory.So, this is an incorrect option.
Option B: Dalton did not discuss about isotopes, ions, protons and electrons in his theory.So, this is an incorrect option.
Option C: Dalton did not discuss about isotopes, ions, protons and electrons in his theory.So, this is an incorrect option.
Chapter 3 Solutions
World of Chemistry
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