FTP name this form of carbon that, unlike diamond, is a good lubricant and is found in pencils?
Each atom in this anisotropic [an-eye-suh-TRAHP-ihk] substance has three valence electrons which participate in bonding and one which is available to carry an electric current. So, unlike another allotrope of the same element, it conducts electricity, but the current can flow only along, not between, the planes of hexagonal rings which make up this substance. FTP name this form of carbon that, unlike diamond, is a good lubricant and is found in pencils?
Each atom in this anisotropic [an-eye-suh-TRAHP-ihk] substance has three valence electrons which participate in bonding and one which is available to carry an electric current.
{graphite} (accept {plumbago} or {black lead}; prompt on "carbon")