0.75 moles of HF and 1.00 mole of NaF were added to 1.00 L of water. To this solution was added 0.200 mol of NaOH. What was the final pH of the solution

personal, she chose to do it.

it's all four options.

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.

they are all solids.