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Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Which is incorrect statement?
- a)Element with atomic number 52 belong to 5th period and 16th group
- b)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18
- c)Among chalcogens oxygen and sulphur exist in free as well as in combined state
- d)The differentiating electron in tellurium enters into 6p subshell
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Direction (Q. Nos. 1-10) This section contains 10 multiple choice ques...
In tellurium, differentiating electron enters in to 5p subshell. Its valence shell configuration is 5s25p4.
Most Upvoted Answer
Direction (Q. Nos. 1-10) This section contains 10 multiple choice ques...
Explanation:
The correct answer is option (d) - The differentiating electron in tellurium enters into 6p subshell.
Let's analyze each statement to understand why option (d) is incorrect:
a) Element with atomic number 52 belong to 5th period and 16th group
- This statement is correct. The atomic number of an element determines its position in the periodic table. The atomic number of 52 corresponds to the element Tellurium (Te), which belongs to the 5th period and 16th group.
b) Number of electrons in the n and (n - 1) shells of selenium are 6 and 18
- This statement is incorrect. Selenium (Se) has an atomic number of 34, which means it has 34 electrons. The electron configuration of Selenium is 2, 8, 18, 6. The 'n' shell represents the outermost shell, also known as the valence shell. In the case of Selenium, the valence shell is the 4th shell (n=4) and it contains 6 electrons. The (n-1) shell refers to the previous shell, which is the 3rd shell (n=3), and it contains 18 electrons.
c) Among chalcogens oxygen and sulphur exist in free as well as in combined state
- This statement is correct. Chalcogens are a group of elements that belong to Group 16 of the periodic table. Oxygen (O) and Sulphur (S) are chalcogens, and they can exist in both free and combined states. For example, oxygen exists as O2 molecule in the free state, and it can also combine with other elements to form compounds such as water (H2O) and carbon dioxide (CO2). Similarly, Sulphur can exist as S8 molecule in the free state and can form compounds like Hydrogen sulphide (H2S) and Sulphur dioxide (SO2).
d) The differentiating electron in tellurium enters into 6p subshell
- This statement is incorrect. The electron configuration of Tellurium (Te) is 2, 8, 18, 18, 6. This means that the differentiating electron, which refers to the last electron added to the electron configuration, enters into the 5p subshell and not the 6p subshell.
Therefore, option (d) is the incorrect statement.
The correct answer is option (d) - The differentiating electron in tellurium enters into 6p subshell.
Let's analyze each statement to understand why option (d) is incorrect:
a) Element with atomic number 52 belong to 5th period and 16th group
- This statement is correct. The atomic number of an element determines its position in the periodic table. The atomic number of 52 corresponds to the element Tellurium (Te), which belongs to the 5th period and 16th group.
b) Number of electrons in the n and (n - 1) shells of selenium are 6 and 18
- This statement is incorrect. Selenium (Se) has an atomic number of 34, which means it has 34 electrons. The electron configuration of Selenium is 2, 8, 18, 6. The 'n' shell represents the outermost shell, also known as the valence shell. In the case of Selenium, the valence shell is the 4th shell (n=4) and it contains 6 electrons. The (n-1) shell refers to the previous shell, which is the 3rd shell (n=3), and it contains 18 electrons.
c) Among chalcogens oxygen and sulphur exist in free as well as in combined state
- This statement is correct. Chalcogens are a group of elements that belong to Group 16 of the periodic table. Oxygen (O) and Sulphur (S) are chalcogens, and they can exist in both free and combined states. For example, oxygen exists as O2 molecule in the free state, and it can also combine with other elements to form compounds such as water (H2O) and carbon dioxide (CO2). Similarly, Sulphur can exist as S8 molecule in the free state and can form compounds like Hydrogen sulphide (H2S) and Sulphur dioxide (SO2).
d) The differentiating electron in tellurium enters into 6p subshell
- This statement is incorrect. The electron configuration of Tellurium (Te) is 2, 8, 18, 18, 6. This means that the differentiating electron, which refers to the last electron added to the electron configuration, enters into the 5p subshell and not the 6p subshell.
Therefore, option (d) is the incorrect statement.
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Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer?.
Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer?.
Solutions for Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12.
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ample number of questions to practice Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.Q.Which is incorrect statement?a)Element with atomic number 52 belong to 5th period and 16th groupb)Number of electrons in the n and (n - 1) shells of selenium are 6 and 18c)Among chalcogens oxygen and sulphur exist in free as well as in combined stated)The differentiating electron in tellurium enters into 6p subshellCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 12 tests.
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