Which among the following is an incorrect option?
Detailed Explanation:
Option 1 is Incorrect: Atoms are electrically neutral because protons (positive) are in the nucleus and electrons (negative) orbit outside it—electrons are NOT inside the nucleus.
Options 2, 3, and 4 are Correct: Electrons are negatively charged with negligible mass; atomic number equals proton count; isotopes have applications in nuclear energy, medicine (radiotherapy), and carbon-14 dating.
Therefore, more than one statement is incorrect/correct, making Option 5 the correct answer.
Question 8 of 8 Atomic Structure
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Isotopes of an element differ in
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