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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Fluorine has greater atomic radius than nitrogen.
Reason : Atomic radius decreases along a period.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
- e)Both Assertion and Reason are false
Correct answer is option 'D'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) ...
Atomic radius is defined as the distance from the centre of the nucleus of an atom to the outermost shell of electrons. The atomic radius decreases along a period. In moving from left to right across the period, the charge on the nucleus increases by one unit (due to increase in atomic number), but the additional electron goes to the same shell. As a result, outer electrons are pulled in closer to the nucleus. This causes the decrease of atomic size.
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Directions: In the following questions, a statement of assertion (A) ...
Assertion (A): Fluorine has a greater atomic radius than nitrogen.
Reason (R): Atomic radius decreases along a period.
Explanation:
- Atomic Radius: Atomic radius is the distance between the nucleus of an atom and its outermost shell.
- Assertion (A) states that fluorine has a greater atomic radius than nitrogen.
- Reason (R) states that atomic radius decreases along a period.
Assertion (A) is false:
- Fluorine (F) has a smaller atomic radius than nitrogen (N).
- Fluorine has an atomic radius of 72 picometers (pm), while nitrogen has an atomic radius of 75 pm.
- The atomic radius decreases from left to right across a period due to increasing nuclear charge and stronger attraction between the nucleus and electrons. Therefore, nitrogen has a smaller atomic radius than fluorine.
Reason (R) is true:
- The atomic radius generally decreases along a period from left to right.
- This decrease in atomic radius is due to an increase in the number of protons in the nucleus, which leads to a stronger attractive force on the electrons and a decrease in atomic size.
- As we move from left to right across a period, the number of protons increases, resulting in a greater nuclear charge.
- This increased nuclear charge attracts the electrons more strongly, pulling them closer to the nucleus and reducing the atomic radius.
Conclusion:
- Assertion (A) is false as fluorine has a smaller atomic radius than nitrogen.
- Reason (R) is true as atomic radius generally decreases along a period due to increasing nuclear charge.
- Therefore, option (d) is the correct answer: Assertion (A) is false but reason (R) is true.
Reason (R): Atomic radius decreases along a period.
Explanation:
- Atomic Radius: Atomic radius is the distance between the nucleus of an atom and its outermost shell.
- Assertion (A) states that fluorine has a greater atomic radius than nitrogen.
- Reason (R) states that atomic radius decreases along a period.
Assertion (A) is false:
- Fluorine (F) has a smaller atomic radius than nitrogen (N).
- Fluorine has an atomic radius of 72 picometers (pm), while nitrogen has an atomic radius of 75 pm.
- The atomic radius decreases from left to right across a period due to increasing nuclear charge and stronger attraction between the nucleus and electrons. Therefore, nitrogen has a smaller atomic radius than fluorine.
Reason (R) is true:
- The atomic radius generally decreases along a period from left to right.
- This decrease in atomic radius is due to an increase in the number of protons in the nucleus, which leads to a stronger attractive force on the electrons and a decrease in atomic size.
- As we move from left to right across a period, the number of protons increases, resulting in a greater nuclear charge.
- This increased nuclear charge attracts the electrons more strongly, pulling them closer to the nucleus and reducing the atomic radius.
Conclusion:
- Assertion (A) is false as fluorine has a smaller atomic radius than nitrogen.
- Reason (R) is true as atomic radius generally decreases along a period due to increasing nuclear charge.
- Therefore, option (d) is the correct answer: Assertion (A) is false but reason (R) is true.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer?
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer?.
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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Here you can find the meaning of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Fluorine has greater atomic radius than nitrogen.Reason : Atomic radius decreases along a period.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.e)Both Assertion and Reason are falseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 10 tests.
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