On the left are given decreasing orders of elements for a certain property and on right side is given the property. The incorrect order for the given properties is:

1. AlF3>MgO>MgF2    : Lattice energy

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

3. PF5> SF6 > SiF4    : Lewis acidic character

4. SiCl4>SiBr4 >SiI4   : Decreasing ionic character

Subtopic:  Lattice & Hydration Energy |
From NCERT
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What is the shape of the IBr2- ion ?

(1) Linear 

(2) Bent shape with bond angle of about 90° 

(3) Bent shape with bond angle of about 109°

(4) Bent shape with bond angle of about 120°

Subtopic:  Hybridisation |
 71%
From NCERT
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What is the shape of the ClF3 molecule?

(1) Trigonal planar 

(2) Trigonal pyramid 

(3) T-shaped 

(4) Tetrahedral 

Subtopic:  Hybridisation |
 77%
From NCERT
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Which of the following compound has the smallest bond angle (XAZ) in each series respectively?

(1) OSF2         OSCl2             OSBr2

(2) SbCl3     SbBr3              SbI3

(3) PI3         AsI3                  SbI3

Options are as follows: 

(a) OSF2, SbCl and PI3    (b) OSBr2, SBI3 and PI3

(c) OSF2, SBI3 and PI3       

(4) OSF2, SBCl3 and SBI3

Subtopic:  Hybridisation |
 50%
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According to VSEPR theory in, which species do all the atoms lie in the same plane?

1. CH3+                                   2. CH3-

(1) 1 only                               

(2) 2 only 

(3) both 1 and 2                     

(4) neither 1 nor 2

Subtopic:  Hybridisation |
 68%
From NCERT
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Idetify the correct sequence of increasing number of π bonds in the structure of the following molecules :

(I) H2S2O6     (II) H2SO3   (III)  H2S2O5

1. I II and III         2. II I and III

3. II III and I         4. I III and II

Subtopic:  Types of Chemical Bond |
 61%
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The state of hybridisation of central atom in dimer of BH3 and BeH2 is:

(1) sp2,sp2   

(2) sp3,sp2 

(3) sp3,sp3 

(4) sp2,sp3

Subtopic:  Hybridisation |
 56%
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Which of the following species/molecules does not have same number of bond pairs and lone pairs?

(1) OCN- 

(2) H2O

(3) C2H2Cl2

(4) O3

Subtopic:  Hybridisation |
 57%
From NCERT
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OO bond length (in A° ) in  H2O2 and O2F2 is respectively:

1. 1.22 , 1.48 2. 1.48 , 1.22
3. 1.22 , 1.22 4. 1.48 , 1.48
Subtopic:  Acidic, Basic Character & Fajan's Rule |
 62%
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The bond length of the SO bond in maximum in which of the following compounds?

1.  SOCI2 

2. SOBr2 

3.SOF2 

4. All have the same length

Subtopic:  Covalent Bond |
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