The valence electrons found in metals are different from nonmetals because select all that apply: a. metals can conduct electricity b. metals have immobile electrons c. the valence electrons of nonmetals cannot roam freely d. metals are able to share electrons with other metals

The answer is; A & C

The valence electrons in the metal atom in the lattice structure can delocalize and move freely. The electrons are "loosely" connected with their parent atom in the metallic bond because most metals have excess electrons in their outer orbitals above the stable configuration. The electrons mainly occur in higher densities around the positively charged nuclei of surrounding metal atoms and move freely between these spaces.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

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