Given below are two statements: Statement I: The number of compounds among \(\mathrm{SO}_{2}, \mathrm{SO}_{3}, \mathrm{SF}_{4}, \mathrm{SF}_{6}\) and \(\mathrm{H}_{2} \mathrm{~S}\) in which sulphur does not obey the Octet rule is 3 . Statement II : Among \([\mathrm{H}_{2} \mathrm{O}, \mathrm{ClF}_{3}, \mathrm{SF}_{4}], [\mathrm{NH}_{3}, \mathrm{BrF}_{5}, \mathrm{SF}_{4}], [\mathrm{BrF}_{5}, \mathrm{ClF}_{3}, \mathrm{XeF}_{4}]\) and \([\mathrm{XeF}_{4}, \mathrm{ClF}_{3}, \mathrm{H}_{2} \mathrm{O}]\), the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1 . In the light of the above statements, choose the correct answer from the options given below :

(D) Statement I is false Statement II is true

(A) Both Statement I and Statement II are true

(B) Both Statement I and Statement II are false

(C) Statement I is true Statement II is false

JEE Main · 2026 · 06 Apr 2026 · Shift 2 · Chemical Bonding and Molecular Structure

Given below are two statements:

Statement I: The number of compounds among

SO_{2}, SO_{3}, SF_{4}, SF_{6}

and

H_{2} S

in which sulphur does not obey the Octet rule is 3 .

Statement II : Among

[H_{2} O, ClF_{3}, SF_{4}], [NH_{3}, BrF_{5}, SF_{4}], [BrF_{5}, ClF_{3}, XeF_{4}]

and

[XeF_{4}, ClF_{3}, H_{2} O]

, the number of sets in which all the molecules have one lone pair of electrons on the central atom is 1 .

In the light of the above statements, choose the correct answer from the options given below :

(A)Both Statement I and Statement II are true
(B)Both Statement I and Statement II are false
(C)Statement I is true Statement II is false
(D)Statement I is false Statement II is true✓ Correct

Answer: (D)

Solution

Among

S O_{2}, S O_{3}, S F_{4}, S F_{6}

and

H_{2} S

, sulphur expands its octet in

S O_{2}

(10 electrons),

S O_{3}

(12),

S F_{4}

(10) and

S F_{6}

(12), while in

H_{2} S

it keeps an octet; four species disobey the octet rule, not three, so Statement I is false. For the lone-pair sets, only

[N H_{3}, Br F_{5}, S F_{4}]

has exactly one lone pair on every central atom, whereas the sets containing

H_{2} O

Cl F_{3}

Xe F_{4}

hold a central atom with two lone pairs; exactly one set qualifies, so Statement II is true. Statement I is false while Statement II is true.

JEE Main · 2026 · 06 Apr 2026 · Shift 2 · Single correct option

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JEE Main · 2026 · 06 Apr 2026 · Shift 2 · Chemical Bonding and Molecular Structure

Solution

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