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Which of the following statement is always correct?
- a)an atom has equal number of electrons, protons and neutrons
- b)an atom has equal number of neutrons
- c)an atom has equal number of electrons and neutrons
- d)an atom has equal number of electrons and protons
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement is always correct?a)an atom has equa...
An atom is electrically neutral because the number of protons is always equal to a number of electrons. Hence option (d) is right.
Atomic number = Number of proton(p) = Number of electron(e)
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Which of the following statement is always correct?a)an atom has equa...
Understanding Atomic Structure
Atoms are the fundamental building blocks of matter and consist of three primary subatomic particles: protons, neutrons, and electrons. To understand the correct answer to your question, we need to explore the roles and relationships of these particles.
Protons and Electrons
- In a neutral atom, the number of protons (positively charged particles) is always equal to the number of electrons (negatively charged particles).
- This balance ensures that the overall charge of the atom is neutral. Therefore, option 'D' is correct: an atom has equal numbers of electrons and protons.
Neutrons
- Neutrons are neutral particles found in the nucleus of the atom alongside protons. The number of neutrons can vary within atoms of the same element, leading to the formation of isotopes.
- Thus, it is not always true that an atom has an equal number of neutrons as electrons or protons, making options 'A', 'B', and 'C' incorrect.
Summary of Options
- Option A: Incorrect - Atoms do not always have an equal number of protons, neutrons, and electrons.
- Option B: Incorrect - The number of neutrons can vary.
- Option C: Incorrect - Neutrons can differ from electrons.
- Option D: Correct - In a neutral atom, the number of electrons equals the number of protons.
Conclusion
Understanding the balance between protons and electrons is crucial for grasping atomic structure. This foundational knowledge is vital for further studies in chemistry and physics.
Atoms are the fundamental building blocks of matter and consist of three primary subatomic particles: protons, neutrons, and electrons. To understand the correct answer to your question, we need to explore the roles and relationships of these particles.
Protons and Electrons
- In a neutral atom, the number of protons (positively charged particles) is always equal to the number of electrons (negatively charged particles).
- This balance ensures that the overall charge of the atom is neutral. Therefore, option 'D' is correct: an atom has equal numbers of electrons and protons.
Neutrons
- Neutrons are neutral particles found in the nucleus of the atom alongside protons. The number of neutrons can vary within atoms of the same element, leading to the formation of isotopes.
- Thus, it is not always true that an atom has an equal number of neutrons as electrons or protons, making options 'A', 'B', and 'C' incorrect.
Summary of Options
- Option A: Incorrect - Atoms do not always have an equal number of protons, neutrons, and electrons.
- Option B: Incorrect - The number of neutrons can vary.
- Option C: Incorrect - Neutrons can differ from electrons.
- Option D: Correct - In a neutral atom, the number of electrons equals the number of protons.
Conclusion
Understanding the balance between protons and electrons is crucial for grasping atomic structure. This foundational knowledge is vital for further studies in chemistry and physics.
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