I need help, I'm scared of failing chemistry and I have nowhere else to go for help. Here are the problems that I need solved. https://paste. pics/FAJCM
https://paste. pics/FAJD2
https://paste. pics/FAJE2
For the first 2 please put the answers as Na+1-(answer)=N-3 so that I know which questions the answers are for. And thank you to whoever answers this because you're a life saver.

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.

how important do you think an instrument is to the musician who plays it?