a boy is flying in 90 gram of model air plane in a horizontal circular path on the end of string 3m long the string exerts a F of 4.32 Newton on the hand ohlding it the speed in meter per second of the plane​

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.

it is a solid

explanation:

може ли да зареждате повече информация, моля

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;