Question

Which of the following is the poorest conductor of electricity ?
1)Rain water
2)Air
3)Sea water
4)Silicon​

Answer 1

Answer:

Rain water because it is the purest water.

Answer 2

Sea water and rainwater comprise of salt and many other impurities.

Those impurities, act as ions and help in the transfer of charge.

Hence, they are good conductor of electricity.

Pure silicon and germanium are poor conductors of electricity because their outer electrons are tied up in the covalent bonds of the diamondlike framework. Less energy is required to free the electrons in silicon, and even less is required in germanium. These atoms are larger and hold their electrons less tightly.

Therefore, option 4) is Correct.

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