What does the double arrow in the diagram below label? A. The amplitude of the wave
B. The medium of the wave
C. The wavelength of the wave
D. The energy of the wave

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.

b) nuclear ive learned that in a pedtrodic table

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;