For the K shell, the four quantum numbers for each of the two electrons in the 1s state, in the order of nlmlms, are 10012 and 100(-12). Write the four quantum numbers for all the electrons in the L and M shells, and note which correspond to the s, p, and d subshells

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explanation:

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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the answer is d. 74.02

the answer is c.the valence of the atoms combine .