Place the following covalent bonds in order from least to most polar: a. h-cl b. h-br c. h-s d. h-c

The Order is as follow,

                                     C-H < S-H < H-Br < H-Cl

Explanation:

                      Polarity depends on the electronegativity difference between two atoms, greater the electronegativity difference, greater will be the polarity of bond and vice versa.

Electronegativity Difference between Hydrogen and other given elements are as follow,

1) C-H;

               E.N of Carbon     = 2.55

               E.N of Hydrogen = 2.20

               Difference              0.35

2) S-H;

               E.N of Sulfur       = 2.58

               E.N of Hydrogen = 2.20

               Difference               0.38

3) H-Br;

               E.N of Bromine   = 2.96

               E.N of Hydrogen = 2.20

               Difference              0.76

4) H-Cl;

               E.N of Chlorine   = 3.16

               E.N of Hydrogen = 2.20

               Difference               0.96

Hence it is proved that the greatest electronegativity difference is found between H and Chlorine in H-Cl, therefore it is highly polar bond and vice versa.

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

gold is my favorite solid.