20 - Chemical Bonds Questions Answers

I had a question that is confusing me. In the NCERT textbook, the structure of ozone molecule is written in terms of formal charges, where one oxygen is positive, and one is negative. But in many other books I saw a coordinate bond in ozone as O=O-->O . Here there are no charges involved. Which structure is correct? Please help.

Asked By: VIKRAM 4 year ago
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which of the following has the maximum value for van der waals constant b - H2O (g) , AlCl3 (g), Cl2 (g)

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

b depends on size so on the basis of size order will be AlCl3>Cl2>H2O

This answer is given by Sarika and is correct answer

 

the type of interaction present between NO3- ion and I2 molecule is ion-dipole interactions or ion-induced dipole interactions.Explains the difference between the two also.

 

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

Iis non polar molecule so it will be ion-induced dipole interactions 

Arrange the following molecules in the increasing order of ionic characters,

LiF, K2O, N2, SO2, ClF

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

N2SO2ClF3, K2O, LiF

Solution by manish sir

N2SO2ClF3, K2O, LiF

This order is due to difference of electronegativity of atoms in a molecule

more difference more will be the ionic character

The ratio of positive charge on H- atom in HX to that in HY from the following data is 

Dipole moment of HX = 1.14 D and HY = 0.38 D

Bond length of HX = 127pm and HY = 170pm

Options are - (i) 3:4 ,   (ii) 4:1  ,  (iii) 1:4

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

dipole moment = charge * bond length

now solve

In [Ag(CN)2]- and [Ag(NH3)2]- , the number of π-bond respectively are

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

number of π-bond in [Ag(CN)2]is 4 and in [Ag(NH3)2], it is 0

Is there is any  relation between bond order and bond angle

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

no

the correct increasing order of lattice energy of the above compounds is - AlF3 , Al2O3 and AlN

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

AlF3              5924 kJ/mol

Al2O3           15916 kJ/mol  

AlN               9506.8 kJ/mol

what do you understand by LCAO method?

Asked By: ADARSH 5 year agoSolved By: SARIKA SHARMA
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Which of the following hydrides has the highest M-H bond polarity

(a) AsH3           (b) BiH3            (c) SbH3          (d) None of these

Asked By: SWATI KAPOOR 5 year ago
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Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

electronegativity of H = 2

and for all other elements in this question electronegativity is less than 2 

least for Bi 

so diff. for Bi is max so max polar

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