Problem: How would you expect the H - X - H bond angle to vary in the series H2O, H2S, H2Se ? (Hint: The size of an electron pair domain depends in part on the electronegativity of the central atom.)

FREE Expert Solution

We have to explain how the H–X–H bond angle varies in the series H2O, H2S, H2Se.


Oxygen, sulfur and selenium all belong to the 6A group of the periodic table. We will follow these steps to solve this problem:

Step 1: Draw a generic Lewis structure for a group 6A element.

Step 2: Explain the trend of electronegativity for O, S and Se.

Step 3: Link bond angles to the drawn structure.

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Problem Details

How would you expect the H - X - H bond angle to vary in the series H2O, H2S, H2Se ? (Hint: The size of an electron pair domain depends in part on the electronegativity of the central atom.)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Bond Angles concept. You can view video lessons to learn Bond Angles. Or if you need more Bond Angles practice, you can also practice Bond Angles practice problems.