The relative atomic weight of a metal can be determined by converting it to its metal oxide. In one such determination 1.00 g of metal X was burnt in oxygen to form 1.40 g of its oxide,
XO. Using the know atomic weight for oxygen and these results, the atomic weight of X is
a. 1.00 g/mol
c. 40.0 g/mol
b. 16.0 g/mol
d. 80.0 g/mol

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explanation:

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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.

if it's not useful, feel free to report for mistake in answer.