Question

which of the following is not a property of a metallic solid?
high melting point
amorphous
held together by a sea of delocalized electrons
high boiling point

Explanation:

Metallic solids have a crystalline structure (ordered arrangement of atoms), while amorphous means lacking a definite crystal structure (like glass). Metallic solids typically have high melting/boiling points and are held by delocalized electrons (metallic bonding). So "amorphous" is not a property of metallic solids.

Answer:

B. amorphous (assuming the options are labeled as A. high melting point, B. amorphous, C. held together by a sea of delocalized electrons, D. high boiling point)