In which of the following species maximum atom can lie in same plane? 

(a) XeF2o2

(b) PCl5

(c)AsH4+

(d) XeF4

Concept Questions :-

Hybridisation
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If two different non axial d-orbitals having 'xz' nodal plane form π bond by overlaping each other then internuclear axis will be :

(a) x         (b) y

(c) z         (d) They don't form π bond

Concept Questions :-

Covalent Bonding
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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 CH4 molecule, which of the following statements is false?

(a) Three CH bonds will be at right angle

(b) One CH bond will be weaker then other three CH bonds

(c) The shape of molecule will be tetrahedral 

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

Concept Questions :-

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 π as well as δ-bond?

(a) dxy                    (b) dz2

(c) dx2-y2               (d) dyz

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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 lp-lp>lp-bp>bp-bp 

(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 H2O is 2 while on N in NH3 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

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Which species is planar?

(a)CO32-

(b) SO32-

(c) ClO3-

(d) BF4-

Concept Questions :-

Hybridisation
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Incorrect statement is:

1. AlF3>MgO>MgF2    : Lattice energy

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

3. SF6>PF5>SiF4       : Lewis acidic character

4. SICI4>SiBr4 >Sil4   : Decreasing ionic character

 

Concept Questions :-

Lattice/Hydration Energy
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What is the geometry of the IBr2- 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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