The geometry of ammonia molecule can be best described as:

(a) Nitrogen at one vertex of a regular tetrahedron, the other three vertices being occupied by three hydrogens

(b) Nitrogen at the centre of the tetrahedron, three vertics being occupied by three hydrogens

(c) Nitrogen at the centre of an equilateral triangle, three corners being occupied by three hydrogens

(d) Nitrogen at the junction of a T, three open ends being occupied by three hydrogens

Concept Questions :-

Hybridisation
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Assuming pure 2s and 2p orbitals are carbon are used in forming $C{H}_{4}$ molecule, which of the following statements is false?

(a) Three C$—$H bonds will be at right angle

(b) One C$—$H bond will be weaker then other three C$—$H bonds

(c) The shape of molecule will be tetrahedral

(d) The angle of C$—$H bond formed by s-s overlapping will be uncertain with respect to other three bonds

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Hybridisation
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Which molecular geometry is least likely to result from a trigonal bipyramidal electron geometry?

(a) Trigonal planar

(b) See-saw

(c) Linear

(d) T-shaped

Concept Questions :-

Hybridisation
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Which of the following orbital can not form $\mathrm{\pi }$ as well as $\delta$-bond?

(a) ${d}_{xy}$                    (b) ${d}_{{z}^{2}}$

(c) ${d}_{{x}^{2}-{y}^{2}}$               (d) ${d}_{yz}$

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Give the correct order of initials and F for following statements. use T if statement is true and F if it is false :

(a) The order of repulsion betweeen different pair of electrons is ${l}_{p}-{l}_{p}>{l}_{p}-{b}_{p}>{b}_{p}-{b}_{p}$

(b) In general , as the number of lone pair of electrons on central atom increases, value of bond angle from normal bond angle also increases

(c) The number of lone pair on O in ${H}_{2}O$ is 2 while on N in $N{H}_{3}$ is 1

(d) The structure of xeon fluorides and xenon oxyfluorides could not be explained on the basis of VSEPR

(A) TTTF

(B) TFTF

(C) TFTT

(D) TFFF

Concept Questions :-

V.S.E.P.R
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Which species is planar?

(a)$C{{O}_{3}}^{2-}$

(b) $S{{O}_{3}}^{2-}$

(c) $Cl{{O}_{3}}^{-}$

(d) $B{{F}_{4}}^{-}$

Concept Questions :-

Hybridisation
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Incorrect statement is:

1. $Al{F}_{3}>MgO>Mg{F}_{2}$    : Lattice energy

2. $Li>Na>Al>Mg$       : Electon affinity

3. $S{F}_{6}>P{F}_{5}>Si{F}_{4}$       : Lewis acidic character

4.    : Decreasing ionic character

Concept Questions :-

Lattice/Hydration Energy
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What is the geometry of the $IB{{r}_{2}}^{-}$ ion ?

(a) Linear

(b) Bent shape with bond angle of about $90°$

(c) Bent shape with bond angle of about $109°$

(d) Bent shape with bond angle of about $120°$

Concept Questions :-

Hybridisation
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What is the shape of the $Cl{F}_{3}$ molecule?

(a) Trigonal planar

(b) Trigonal pyramid

(c) T-shaped

(d) Tetrahedral

Concept Questions :-

Hybridisation
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Which of the following compound has the smallest bond angle (X$—$A$—$Z) in each series respectively?

(A)              $OSB{r}_{2}$

(B) $SbC{I}_{3}$     $SbB{r}_{3}$              $Sb{I}_{3}$

(C) $P{I}_{3}$         $As{I}_{3}$                  $Sb{I}_{3}$

Options are as follows:

(a)     (b)

(c)         (d)

Concept Questions :-

Hybridisation
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Difficulty Level: