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The atoms of which of the following pair of elements are most likely to exist in free state?
- a)Hydrogen and helium
- b)Helium and neon
- c)Argon and carbon
- d)Neon and nitrogen
Correct answer is option 'B'. Can you explain this answer?
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The atoms of which of the following pair of elements are most likely ...
The atoms of which are most likely to exist in free state are Helium and neon being inert gases having octet filled.
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The atoms of which of the following pair of elements are most likely ...
Understanding Free State of Atoms
Atoms exist in a free state when they are not bonded to other atoms. This typically occurs with noble gases due to their stable electron configurations.
The Noble Gases
- Noble Gases: Helium (He) and Neon (Ne) belong to Group 18 of the periodic table, known as the noble gases.
- Stability: These elements have complete valence electron shells. Helium has 2 electrons, while Neon has 8. This stability makes them less likely to react with other elements.
Why Helium and Neon Exist in Free State
- Inert Nature: Both helium and neon are chemically inert, meaning they don't readily form compounds with other elements.
- Occurrence: In nature, they are found in their elemental form, often in the atmosphere and are used in applications like balloons and lighting.
Other Elements in the Options
- Hydrogen and Helium: Hydrogen (H) can bond with other elements, while helium is stable.
- Argon and Carbon: Argon (Ar) is inert like the noble gases, but carbon (C) readily forms various compounds.
- Neon and Nitrogen: While neon is inert, nitrogen (N) is very reactive and forms numerous compounds.
Conclusion
The correct answer is option 'B' (Helium and Neon) because both are noble gases that exist in a free state due to their stable electronic configurations and inert nature.
Atoms exist in a free state when they are not bonded to other atoms. This typically occurs with noble gases due to their stable electron configurations.
The Noble Gases
- Noble Gases: Helium (He) and Neon (Ne) belong to Group 18 of the periodic table, known as the noble gases.
- Stability: These elements have complete valence electron shells. Helium has 2 electrons, while Neon has 8. This stability makes them less likely to react with other elements.
Why Helium and Neon Exist in Free State
- Inert Nature: Both helium and neon are chemically inert, meaning they don't readily form compounds with other elements.
- Occurrence: In nature, they are found in their elemental form, often in the atmosphere and are used in applications like balloons and lighting.
Other Elements in the Options
- Hydrogen and Helium: Hydrogen (H) can bond with other elements, while helium is stable.
- Argon and Carbon: Argon (Ar) is inert like the noble gases, but carbon (C) readily forms various compounds.
- Neon and Nitrogen: While neon is inert, nitrogen (N) is very reactive and forms numerous compounds.
Conclusion
The correct answer is option 'B' (Helium and Neon) because both are noble gases that exist in a free state due to their stable electronic configurations and inert nature.
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The atoms of which of the following pair of elements are most likely to exist in free state?a)Hydrogen and heliumb)Helium and neonc)Argon and carbond)Neon and nitrogenCorrect answer is option 'B'. Can you explain this answer? for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about The atoms of which of the following pair of elements are most likely to exist in free state?a)Hydrogen and heliumb)Helium and neonc)Argon and carbond)Neon and nitrogenCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The atoms of which of the following pair of elements are most likely to exist in free state?a)Hydrogen and heliumb)Helium and neonc)Argon and carbond)Neon and nitrogenCorrect answer is option 'B'. Can you explain this answer?.
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