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. [2026]

Question

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 statements, choose the correct answer from the options given below [2026]

Smart Achievers · Accepted Answer

(4)

$\Rightarrow {SiO}_{2}, {CO}_{2}, GeO, {GeO}_{2} are acidic in nature.$

$SnO, {SnO}_{2}, PbO, {PbO}_{2} are amphoteric in nature.$

$\Rightarrow {BF}_{3}$ is Lewis acid according to Lewis octet theory and has $s p^{2}$ hybridization with trigonal planar geometry and it can accept lone pair from ammonia to form adduct.

Solution

1 Statement I is false but Statement II is true

2 Both Statement I and Statement II are false

3 Statement I is true but Statement II is false

4 Both Statement I and Statement II are true

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