Identify the type of solid from the description. select from the following choices: metallic solid, network solid, molecular solid, ionic solid, or amorphous solid.

What is the relative mass of an electron? a) 1/1840 the mass of a neutron + proton b) 1/1840 the mass of an alpha particle c) 1/1840 the mass of a c-12 atom d) 1/1840 the mass of a hydrogen atom