Polarity and Boiling Point: The polarity of the molecules determines the forces of attraction between the molecules in the liquid state. Polar molecules are attracted by the opposite charge effect (the positive end of one molecule is attracted to the negative end of another molecule.
The five disadvantages of solar power. It's intermittent. Solar energy is only available when the sun is shining. It's low efficiency. It requires large areas of land. It's not completely free of environmental impact. Ultrapure polysilicon is now scarce. It's high cost.
As the world searches for the most cost-effective ways to reduce our carbon output in the face of global climate change, solar energy has become a trendy resource for good reason and perhaps a bragging right for Earth Day and the Fourth of July. What are the disadvantages of solar energy? The top 5 cons of solar power