Given below are two statements: Statement I: The number of pairs among [\(\mathrm{SiO}_{2}, \mathrm{CO}_{2}\)], \(\left[\mathrm{SnO}, \mathrm{SnO}_{2}\right],\left[\mathrm{PbO}, \mathrm{PbO}_{2}\right]\) and \(\left[\mathrm{GeO}, \mathrm{GeO}_{2}\right]\), which contain oxides that are both amphoteric is 2. Statement II: \(\mathrm{BF}_{3}\) is an electron deficient molecule can act as a lewis acid, forms adduct with \(\mathrm{NH}_{3}\) and has a trigonal planar geometry. In the light of the above statement, choose the correct answer from the option 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 but Statement II is false.

(D) Statement I is false Statement II is true.

JEE Main · 2026 · 21 Jan 2026 · Shift 1 · p-Block Elements

Given below are two statements:

Statement I: The number of pairs among [

SiO_{2}, CO_{2}

[SnO, SnO_{2}], [PbO, PbO_{2}]

and

[GeO, GeO_{2}]

, which contain oxides that are both amphoteric is 2.
Statement II:

BF_{3}

is an electron deficient molecule can act as a lewis acid, forms adduct with

NH_{3}

and has a trigonal planar geometry.
In the light of the above statement, choose the correct answer from the option given below.

Answer: (A)

Among the given pairs only tin and lead give oxides that are both amphoteric: SnO and SnO

_{2}

are amphoteric, and PbO and PbO

_{2}

are amphoteric. In contrast CO

_{2}

, SiO

_{2}

, GeO and GeO

_{2}

are acidic, so the pairs [SiO

_{2}

,CO

_{2}

] and [GeO,GeO

_{2}

] do not qualify. The number of pairs in which both oxides are amphoteric is therefore 2, making Statement I correct. In BF

_{3}

the boron is surrounded by only six electrons, so the molecule is electron deficient and behaves as a Lewis acid, accepting the lone pair of NH

_{3}

to form the adduct H

_{3}

\to

_{3}

; with sp

^{2}

hybridisation it is trigonal planar, making Statement II correct. Both statements are true.

JEE Main · 2026 · 21 Jan 2026 · Shift 1 · Single correct option