An atom of aluminum (Al) has a diameter of about 1.2 10-8 cm. (a) What is the radius of a(n) aluminum atom in Angstroms (Å)? Å What is the radius of a aluminum atom in meters (m)? m (b) How many aluminum atoms would have to be placed side by side to span a distance of 6.0 µm? atoms (c) If the atom is assumed to be a sphere, what is the volume in m3 of a single aluminum atom?