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.
They are the plug and play option for sustainable energy. All you need is a panel and a battery, and maybe a controller. Thatâs quite a bit different from a wind generator that has several systems working together just in the generation part of the system. The main disadvantage with solar PV is that they do not work at night or on cloudy days.