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13 - Chemical Bonds Questions Answers

Chemistry >> General Chemistry >> Chemical Bonds IIT JEE

Does stabilization of a charge mean willingness of other atoms in the molecule to share the charge or the extent of sharing of charge ? If its the 1st then how does that stabilize the charge?

Asked By: LUFFY
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Joshi sir comment

Sharing is the case applicable for the atoms of same electronegativity, thus by sharing electrons (charges) atoms make their orbital configurations stable according to the rules defined for stability.

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

which of the following has the maximum value for van der waals constant b - H2O (g) , AlCl3 (g), Cl2 (g)

Asked By: SWATI KAPOOR
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Joshi sir comment

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

 

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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
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Joshi sir comment

I2 is non polar molecule so it will be ion-induced dipole interactions 

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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

LiF, K2O, N2, SO2, ClF3 

Asked By: SWATI KAPOOR
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Joshi sir comment

N2, SO2, ClF3, K2O, LiF

Solution by Joshi sir

N2, SO2, ClF3, K2O, LiF

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

more difference more will be the ionic character

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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
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Joshi sir comment

dipole moment = charge * bond length

now solve

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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

Asked By: SWATI KAPOOR
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Joshi sir comment

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

Chemistry >> General Chemistry >> Chemical Bonds Board Exam

Is there is any  relation between bond order and bond angle

Asked By: SWATI KAPOOR
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Joshi sir comment

no

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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

Asked By: SWATI KAPOOR
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Joshi sir comment

AlF3              5924 kJ/mol

Al2O3           15916 kJ/mol  

AlN               9506.8 kJ/mol

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

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
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Joshi sir comment

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

Chemistry >> General Chemistry >> Chemical Bonds Medical Exam

which of the following has highest energy?

1)S-S

2)O-O

3)Se-Se

4)Te-Te

Asked By: SHIVANI MALIK
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Joshi sir comment

O-O         498.36 kJ/mole

S-S         425.30 kJ/mole

Se-Se      332.6 kJ/mole

Te-Te      259.8 kJ/mole

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