Octet Rule and Its Limitations
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313804 How many of the following violate octet rule?
\({\mathrm{\mathrm{SF}_{6}, \mathrm{PCl}_{3}, \mathrm{SCl}_{2}, \mathrm{BF}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}}}\)

1 1
2 2
3 3
4 6
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313805 Amongst the following, the total number of species not having eight electrons around central atom in its outer most shell, is
\(\mathrm{NH}_{3}, \mathrm{AlCl}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}, \mathrm{PCl}_{5}\)

1 2
2 4
3 1
4 3
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313806 Assertion :
\(\mathrm{SF}_{6}\) and \(\mathrm{PF}_{5}\) are examples of expanded octet molecules.
Reason :
\(\mathrm{P}\) in \(\mathrm{PF}_{5}\) and \(\mathrm{S}\) in \(\mathrm{SF}_{6}\), are in \(\mathrm{sp}^{3} \mathrm{~d}\) and \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridizations respectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313807 Which of the following molecule deviates from octet rule with respect to central atom?

1 \(\mathrm{PCl}_{3}\)
2 \(\mathrm{H}_{2} \mathrm{~S}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{XeF}_{4}\)
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313804 How many of the following violate octet rule?
\({\mathrm{\mathrm{SF}_{6}, \mathrm{PCl}_{3}, \mathrm{SCl}_{2}, \mathrm{BF}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}}}\)

1 1
2 2
3 3
4 6
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313805 Amongst the following, the total number of species not having eight electrons around central atom in its outer most shell, is
\(\mathrm{NH}_{3}, \mathrm{AlCl}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}, \mathrm{PCl}_{5}\)

1 2
2 4
3 1
4 3
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313806 Assertion :
\(\mathrm{SF}_{6}\) and \(\mathrm{PF}_{5}\) are examples of expanded octet molecules.
Reason :
\(\mathrm{P}\) in \(\mathrm{PF}_{5}\) and \(\mathrm{S}\) in \(\mathrm{SF}_{6}\), are in \(\mathrm{sp}^{3} \mathrm{~d}\) and \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridizations respectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313807 Which of the following molecule deviates from octet rule with respect to central atom?

1 \(\mathrm{PCl}_{3}\)
2 \(\mathrm{H}_{2} \mathrm{~S}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{XeF}_{4}\)
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313804 How many of the following violate octet rule?
\({\mathrm{\mathrm{SF}_{6}, \mathrm{PCl}_{3}, \mathrm{SCl}_{2}, \mathrm{BF}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}}}\)

1 1
2 2
3 3
4 6
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313805 Amongst the following, the total number of species not having eight electrons around central atom in its outer most shell, is
\(\mathrm{NH}_{3}, \mathrm{AlCl}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}, \mathrm{PCl}_{5}\)

1 2
2 4
3 1
4 3
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313806 Assertion :
\(\mathrm{SF}_{6}\) and \(\mathrm{PF}_{5}\) are examples of expanded octet molecules.
Reason :
\(\mathrm{P}\) in \(\mathrm{PF}_{5}\) and \(\mathrm{S}\) in \(\mathrm{SF}_{6}\), are in \(\mathrm{sp}^{3} \mathrm{~d}\) and \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridizations respectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313807 Which of the following molecule deviates from octet rule with respect to central atom?

1 \(\mathrm{PCl}_{3}\)
2 \(\mathrm{H}_{2} \mathrm{~S}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{XeF}_{4}\)
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313804 How many of the following violate octet rule?
\({\mathrm{\mathrm{SF}_{6}, \mathrm{PCl}_{3}, \mathrm{SCl}_{2}, \mathrm{BF}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}}}\)

1 1
2 2
3 3
4 6
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313805 Amongst the following, the total number of species not having eight electrons around central atom in its outer most shell, is
\(\mathrm{NH}_{3}, \mathrm{AlCl}_{3}, \mathrm{BeCl}_{2}, \mathrm{CCl}_{4}, \mathrm{PCl}_{5}\)

1 2
2 4
3 1
4 3
NEET - 2023
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313806 Assertion :
\(\mathrm{SF}_{6}\) and \(\mathrm{PF}_{5}\) are examples of expanded octet molecules.
Reason :
\(\mathrm{P}\) in \(\mathrm{PF}_{5}\) and \(\mathrm{S}\) in \(\mathrm{SF}_{6}\), are in \(\mathrm{sp}^{3} \mathrm{~d}\) and \(\mathrm{sp}^{3} \mathrm{~d}^{2}\) hybridizations respectively.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

313807 Which of the following molecule deviates from octet rule with respect to central atom?

1 \(\mathrm{PCl}_{3}\)
2 \(\mathrm{H}_{2} \mathrm{~S}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{XeF}_{4}\)
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