Ammonia reacts with hydrogen chloride in the gas phase to produce the ionic compound ammonium chloride via the reaction NH3(g) + HCl(g) ➔ NH4Cl(s). What is the percent yield of ammonium chloride if 0.81 g of NH4Cl is formed when 0.75 g of NH3 is reacted with 0.62 g HCl?

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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