Determine whether the statement is true or false, and why. “if a theory becomes supported by evidence, it can become a law.”
a. false, it should read, “a theory and a hypothesis are already equally supported by evidence, but they have different functions.”
b. false, it should read, “if a theory becomes supported by evidence, it can become a hypothesis.”
c. true
d. false, it should read, “a theory and a law are already both supported by evidence and are equal, but they have different functions.”

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.

pv=nrt

explanation:

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.