Class 12 Exam > Class 12 Questions > Which are correct statements ?a)The melting p...
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Which are correct statements ?
- a)The melting point of antimony is higher than bismuth
- b)Ionisation energy of C < O < N
- c)In 15th group, all show allotropy except bismuth and nitrogen
- d)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectively
Correct answer is option 'A,B,C,D'. Can you explain this answer?
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Verified Answer
Which are correct statements ?a)The melting point ofantimony is higher...
Option A: Bismuth has 6 electron shells, whereas Antimony has 5 electron shells. Because of this, the attractive force between two Bismuth atoms is less due to electron shielding, resulting in bismuth possessing a lower boiling point than antimony.
Option B: In a period of moving from left to right, the ionization energy increases. Since N has a table half-filled 2p subshell which requires large energy.
Thus, the correct order of ionization energy is C < O < N.
Option C: Except N and Bi, all the group 15 elements exhibits allotropy. The allotropes of phosphorous are rather complex but essentially, there are three allotropic forms known as white, red, and black phosphorous.
Option D: Maximum covalency of N & P are 4 and 5.
Option B: In a period of moving from left to right, the ionization energy increases. Since N has a table half-filled 2p subshell which requires large energy.
Thus, the correct order of ionization energy is C < O < N.
Option C: Except N and Bi, all the group 15 elements exhibits allotropy. The allotropes of phosphorous are rather complex but essentially, there are three allotropic forms known as white, red, and black phosphorous.
Option D: Maximum covalency of N & P are 4 and 5.
Hence, option A,B,C,D is correct.
Most Upvoted Answer
Which are correct statements ?a)The melting point ofantimony is higher...
A)The melting point of antimony is higher than bismuth. (Correct)
b)Ionisation energy of C. (Incomplete statement, it is missing the value and units. Therefore, cannot be determined if it is correct or incorrect)
b)Ionisation energy of C. (Incomplete statement, it is missing the value and units. Therefore, cannot be determined if it is correct or incorrect)
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Community Answer
Which are correct statements ?a)The melting point ofantimony is higher...
In option A
Bismuth show less less melting point than antimony due to inert pair effect , there is a slight decrease in melting point.
in option B
ionization energy of nitrogen is more because of half filled electronic configuration and next oxygen is more because of its electronegativity shown and reluctance to lose electron
finally carbon has least
in option C
Bismuth due to its inert pair effect does not exist with variable oxidation state.
Nitrogen does not show allotropy because of its small size and high electronegativity. The single N-N bond is weaker than P-P bond because of high inter electronic repulsions among non-bonding electrons due to the small bond
distance
I hope this helps you
Bismuth show less less melting point than antimony due to inert pair effect , there is a slight decrease in melting point.
in option B
ionization energy of nitrogen is more because of half filled electronic configuration and next oxygen is more because of its electronegativity shown and reluctance to lose electron
finally carbon has least
in option C
Bismuth due to its inert pair effect does not exist with variable oxidation state.
Nitrogen does not show allotropy because of its small size and high electronegativity. The single N-N bond is weaker than P-P bond because of high inter electronic repulsions among non-bonding electrons due to the small bond
distance
I hope this helps you
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Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer?
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Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer?.
Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer?.
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Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer?, a detailed solution for Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? has been provided alongside types of Which are correct statements ?a)The melting point ofantimony is higher than bismuthb)Ionisation energy of C < O < Nc)In 15th group, all show allotropy except bismuth and nitrogend)Maximum covalency of nitrogen and Phosphorus are 4 and 5 respectivelyCorrect answer is option 'A,B,C,D'. Can you explain this answer? theory, EduRev gives you an
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