Statement I : The number of species among SF 4 , NH 4 + , [ NiCl 4 ] 2 - , XeF 4 , [ PtCl 4 ] - , SeF 4 and [ Ni ( C N ) 4 ] 2 - , that have tetrahedral geometry is 3. [2026]

Question

Given below are two statements :

Statement I : The number of species among ${SF}_{4}, {NH}_{4}^{+}, {[{NiCl}_{4}]}^{2 -}, {XeF}_{4}, {[{PtCl}_{4}]}^{2 -}, {SeF}_{4} and {[Ni {(CN)}_{4}]}^{2 -},$ that have tetrahedral geometry is 3.

Statement II : In the set $[{NO}_{2}, {BeH}_{2}, {BF}_{3}, {AlCl}_{3}]$ all the molecules have incomplete octet around central atom.

In the light of the above statements, choose the correct answer from the options given below: [2026]

Smart Achievers · Accepted Answer

(4)

$Statement-I$

${SF}_{4} (See-saw)$

${XeF}_{4} (square planar),$

${[{PtCl}_{4}]}^{2 -} (square planar),$

${[{NiCl}_{4}]}^{2 -} (Tetrahedral),$

${[Ni {(CN)}_{4}]}^{2 -} (square planar),$

${SeF}_{4} (See-saw)$

${NH}_{4}^{+} (Tetrahedral)$

$Statement-II$

${NO}_{2} (seven electrons on N)$

${BeH}_{2} (four electrons on Be)$

${BF}_{3} (six electrons on B)$

${AlCl}_{3} (six electrons on Al)$

Solution

1 Both Statement I and Statement II are false

2 Both Statement I and Statement II are true

3 Statement I is true but Statement II is false

4 Statement I is false but Statement II is true

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