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In which of the following molecules does oxygen have a partial positive charge

In which of the following molecules does oxygen have a partial positive charge

 In which of the following molecules does oxygen have a partial positive charge (?+)?

A)  O2    B)  OF2    C)  H2O    D)  MgO    E)  None of these

 

22.              Using periodic trends, arrange the following atoms in order of increasing electronegativity:Cl, Si, Ga, Sr

A)Cl D)Sr

B)Si E)Sr > Ga

C)Si

 

23.              Using periodic trends, arrange the following atoms in order of increasing electronegativity:  F, O, S, As

A)F D)S

B)As E)S

C)As

 

24.              Using periodic trends, arrange the following atoms in order of increasing electronegativity:  Se, Cl, Mg, Na

A)Se D)Se

B)Na E)Na

C)Mg

 

25.              Using periodic trends, arrange the following atoms in order of increasing electronegativity:  S, Sr, P, Cs

A)S D)Cs

B)S E)Cs

C)P

 

26.              Which of the following molecules contains the most polar bonds?

A)  F2    B)  OF2    C)  NF3    D)  BF3    E)  CF4

 

27.              Arrange the following bonds in order of increasing polarity:  C-O, C-C, C-N, C-F

A)C-O D)C-C

B)C-N E)C-C

C)C-F

 

28.              Arrange the following bonds in order of increasing polarity:  F-F, F-C, F-O, F-N

A)F-F D)F-N

B)F-F E)F-N

C)F-O

 

29.              Arrange the following bonds in order of increasing polarity:  Cl-S, Cl-P, Cl-Si, Cl-Cl

A)Cl-S D)Cl-Cl

B)Cl-S E)Cl-Cl

C)Cl-Si

 

30.              Arrange the following bonds in order of increasing polarity:  O-H, C-H, F-H, H-H

A)O-H D)C-H

B)C-H E)H-H

C)H-H

abhinav behal 15-Feb-2020

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