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Why is PCl5 Lewis acid?

According to the Lewis concept, acid is the substance that accepts a lone pair of electrons since it has empty orbitals in the valence shell. The... View Article

Why is frequency v?

It is not the English alphabet v, it is the Greek letter nu. It represents the frequency of the wave. Frequency is the number of vibrations per second.... View Article

Is glass a polymer?

Organic glasses are polymers with an irregular sequence of the monomers. Organic glasses are also called optical polymers.... View Article

Is glucose a starch?

Starch is a polysaccharide made from polymers of glucose. Starch has two types of polysaccharide, one is the branched amylopectin and the other... View Article

Who invented silk?

Silk was invented in ancient China by Lady Hsi-Ling-Shih, wife of mythical yellow Emperor Leizu around the year 2696 BC.... View Article