First, let's understand the concept of polar and non-polar substances.
Polar substances have an uneven distribution of electrons, leading to partial positive and negative charges within the molecule. In contrast, non-polar substances have a symmetrical distribution of electrons, resulting in no separation of charge.
Now, let's identify three examples of non-polar substances from the given choices:
1. Option D: methane, carbon tetrachloride, carbon diselenide
- Methane (CH4) is a non-polar molecule because it consists of four identical carbon-hydrogen bonds, creating a symmetrical distribution of charge.
- Carbon tetrachloride (CCl4) is also non-polar due to its symmetrical tetrahedral shape with four identical carbon-chlorine bonds.
- Carbon diselenide (CSe2) is non-polar as well, as it contains two identical carbon-selenium bonds leading to a symmetrical electron distribution.
Therefore, option D correctly lists three examples of non-polar substances.
By understanding the molecular structures and the concept of electron distribution, we can distinguish between polar and non-polar substances effectively. If you have any further questions or need more clarification, feel free to ask!
