Class 9 Exam > Class 9 Questions > There are four elements P, Q, R and S having ...
Start Learning for Free
There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will be
- a)S
- b)R
- c)Q
- d)P
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
There are four elements P, Q, R and S having atomic numbers of 4, 18, ...
P – 4: Has 2- valence electrons. Is an s-block metal. Can exhibit covalency and electro valency.
Q – 18: Has Octet configuration: Noble gas
R – 10: Has Octet configuration.: Noble gas
S – 16: Has valence 6 – electrons: Non-metal: Mostly shows covalency.
Beryllium metal with atomic number -4 can show electrovalency and covalency.
Compare to other elements of the group it behaves mostly covalent but with higher electronegative elements it can show electrovalency.
Free Test
FREE
| Start Free Test |
Community Answer
There are four elements P, Q, R and S having atomic numbers of 4, 18, ...
Covalency and electrovalency are two types of chemical bonding. Covalent bonding involves the sharing of electrons between atoms, while electrovalent bonding involves the transfer of electrons from one atom to another.
In order to determine which element can exhibit both covalency and electrovalency, we need to consider the electronic configuration and valency of each element.
Electronic Configuration:
- Element P has an atomic number of 4, which means it has 4 electrons. Its electronic configuration is 2, 2.
- Element Q has an atomic number of 18, which means it has 18 electrons. Its electronic configuration is 2, 8, 8.
- Element R has an atomic number of 10, which means it has 10 electrons. Its electronic configuration is 2, 8.
- Element S has an atomic number of 16, which means it has 16 electrons. Its electronic configuration is 2, 8, 6.
Valency:
- The valency of an element depends on the number of electrons it needs to gain, lose, or share to achieve a stable electron configuration.
- Element P has a valency of 4, as it needs to gain 4 electrons to achieve a stable configuration.
- Element Q has a valency of 8, as it needs to gain 8 electrons to achieve a stable configuration.
- Element R has a valency of 2, as it needs to gain 2 electrons to achieve a stable configuration.
- Element S has a valency of 6, as it needs to gain 2 electrons to achieve a stable configuration.
Analysis:
- Elements P and R have a valency of 4 and 2, respectively. These valencies suggest that they can exhibit covalency, as they have electrons available for sharing.
- Elements Q and S have valencies of 8 and 6, respectively. These valencies suggest that they can exhibit electrovalency, as they have electrons available for transfer.
Conclusion:
Based on the analysis, the element that can exhibit both covalency and electrovalency is element S (atomic number 16). Element S has a valency of 6, suggesting it can exhibit electrovalency, and it also has electrons available for sharing, indicating it can exhibit covalency as well. Therefore, the correct answer is option 'A'.
In order to determine which element can exhibit both covalency and electrovalency, we need to consider the electronic configuration and valency of each element.
Electronic Configuration:
- Element P has an atomic number of 4, which means it has 4 electrons. Its electronic configuration is 2, 2.
- Element Q has an atomic number of 18, which means it has 18 electrons. Its electronic configuration is 2, 8, 8.
- Element R has an atomic number of 10, which means it has 10 electrons. Its electronic configuration is 2, 8.
- Element S has an atomic number of 16, which means it has 16 electrons. Its electronic configuration is 2, 8, 6.
Valency:
- The valency of an element depends on the number of electrons it needs to gain, lose, or share to achieve a stable electron configuration.
- Element P has a valency of 4, as it needs to gain 4 electrons to achieve a stable configuration.
- Element Q has a valency of 8, as it needs to gain 8 electrons to achieve a stable configuration.
- Element R has a valency of 2, as it needs to gain 2 electrons to achieve a stable configuration.
- Element S has a valency of 6, as it needs to gain 2 electrons to achieve a stable configuration.
Analysis:
- Elements P and R have a valency of 4 and 2, respectively. These valencies suggest that they can exhibit covalency, as they have electrons available for sharing.
- Elements Q and S have valencies of 8 and 6, respectively. These valencies suggest that they can exhibit electrovalency, as they have electrons available for transfer.
Conclusion:
Based on the analysis, the element that can exhibit both covalency and electrovalency is element S (atomic number 16). Element S has a valency of 6, suggesting it can exhibit electrovalency, and it also has electrons available for sharing, indicating it can exhibit covalency as well. Therefore, the correct answer is option 'A'.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer?
Question Description
There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer?.
There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer?.
Solutions for There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice There are four elements P, Q, R and S having atomic numbers of 4, 18, 10 and 16, respectively. The element which can exhibit covalency as well as electrovalency will bea)Sb)Rc)Qd)PCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup