figure of hydrogen sulfide molecule

H2S is called Hydrogen sulfide. First we need to count the total number of valence electrons. We just add the valence electrons of each atom involved.

S = 6

H = 1 x 2

------------

      8 electrons

Next, we have to assign the central atom; In this case it is S.

Now we have to connect the atoms and form a bond. We can form two S-H bonds.

       S

    /     \

  H       H

Finally, we have to distribute The remaining electrons on S provided that it follows the octet rule.

     : S :

    /     \

  H       H

H2S has a similar structure with water. It's geometry is bent. The two lone pairs in the S atoms would tend to repel thus making the angle between H-S-H smaller than 109 degrees. It's observed angle is about 92 degrees. That phenomenon also accounts to its polarity. It is a polar molecule.