Class 9 Exam > Class 9 Questions > Which of the following electronic configurati...
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Which of the following electronic configuration is wrong ?
- a)Be (3) = 2, 1
- b)O (8) = 2, 6
- c)S (16) = 2, 6, 8
- d)P (15) = 2, 8, 5
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following electronic configuration is wrong ?a)Be (3) = 2...
Electronic Configuration of Atoms
Electronic configuration refers to the arrangement of electrons in the shells/orbitals of an atom. The electronic configuration of an atom determines its chemical properties and its reactivity with other atoms.
Explanation of Options
a) Be (3) = 2, 1
The electronic configuration of beryllium (Be) is 1s2 2s2. The atomic number of beryllium is 4, which means that it has 4 electrons. The electronic configuration mentioned in option (a) is correct.
b) O (8) = 2, 6
The electronic configuration of oxygen (O) is 1s2 2s2 2p4. The atomic number of oxygen is 8, which means that it has 8 electrons. The electronic configuration mentioned in option (b) is incorrect. It should be 1s2 2s2 2p6.
c) S (16) = 2, 6, 8
The electronic configuration of sulfur (S) is 1s2 2s2 2p6 3s2 3p4. The atomic number of sulfur is 16, which means that it has 16 electrons. The electronic configuration mentioned in option (c) is correct.
d) P (15) = 2, 8, 5
The electronic configuration of phosphorus (P) is 1s2 2s2 2p6 3s2 3p3. The atomic number of phosphorus is 15, which means that it has 15 electrons. The electronic configuration mentioned in option (d) is correct.
Conclusion
In conclusion, the correct answer is option (b) O (8) = 2, 6 because the electronic configuration should be 1s2 2s2 2p6 and not 2, 6.
Electronic configuration refers to the arrangement of electrons in the shells/orbitals of an atom. The electronic configuration of an atom determines its chemical properties and its reactivity with other atoms.
Explanation of Options
a) Be (3) = 2, 1
The electronic configuration of beryllium (Be) is 1s2 2s2. The atomic number of beryllium is 4, which means that it has 4 electrons. The electronic configuration mentioned in option (a) is correct.
b) O (8) = 2, 6
The electronic configuration of oxygen (O) is 1s2 2s2 2p4. The atomic number of oxygen is 8, which means that it has 8 electrons. The electronic configuration mentioned in option (b) is incorrect. It should be 1s2 2s2 2p6.
c) S (16) = 2, 6, 8
The electronic configuration of sulfur (S) is 1s2 2s2 2p6 3s2 3p4. The atomic number of sulfur is 16, which means that it has 16 electrons. The electronic configuration mentioned in option (c) is correct.
d) P (15) = 2, 8, 5
The electronic configuration of phosphorus (P) is 1s2 2s2 2p6 3s2 3p3. The atomic number of phosphorus is 15, which means that it has 15 electrons. The electronic configuration mentioned in option (d) is correct.
Conclusion
In conclusion, the correct answer is option (b) O (8) = 2, 6 because the electronic configuration should be 1s2 2s2 2p6 and not 2, 6.
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Community Answer
Which of the following electronic configuration is wrong ?a)Be (3) = 2...
The atomic no. Of Be is wrong.It should be 4 instead of 3.
The electronic configuration of C is wrong it should be 2,8,6 instead of 2.6.8
The electronic configuration of C is wrong it should be 2,8,6 instead of 2.6.8
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Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct 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 Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct 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 Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct answer is option 'B'. Can you explain this answer?.
Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct 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 Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct 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 Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct answer is option 'B'. Can you explain this answer?.
Solutions for Which of the following electronic configuration is wrong ?a)Be (3) = 2, 1b)O (8) = 2, 6c)S (16) = 2, 6, 8d)P (15) = 2, 8, 5Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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