Identify the elements present in the following compounds:
a. LiH b. NaCl c. NH3

a. LiH = Lithium hydride.

b.NaCl = sodium chloride.

c. NH3 = 1 nitrogen atoms 3 hydrogen atoms.

Explanation:

a. Lithium metal reacts directly with hydrogen gas to form the hydride lithium(I) hydride, LiH.

b. Chemically, table salt consists of two elements, sodium (Na) and chloride (Cl). Neither element occurs separately and free in nature, but are found bound together as the compound sodium chloride.

c. Ammonia is a compound of nitrogen and hydrogen with the formula NH3. A stable binary hydride, and the simplest pnictogen hydride, ammonia is a colourless gas with a distinct pungent smell.

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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