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How many total of H^2S valence electrons?What is lewis structure?What is molecular...

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smith1767 | Student, Undergraduate | eNoter

Posted October 30, 2012 at 2:28 PM via web

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How many total of H^2S valence electrons?What is lewis structure?What is molecular shape?What is bond angle?Is H^2S polor or non-polar?

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jerichorayel | College Teacher | (Level 1) Senior Educator

Posted October 30, 2012 at 3:24 PM (Answer #1)

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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.

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jerichorayel | College Teacher | (Level 1) Senior Educator

Posted October 30, 2012 at 3:26 PM (Answer #2)

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figure of hydrogen sulfide molecule

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