Grades are due today and I don’t have a lot of homework done Please help. BRAINLIST TO THE CORRECT ANSWER

I can only help with 2, 3, and 4

2. The delocalised electrons in the metal are free to move throughout the entire structure. When attached to an electrical power source, this means the metal can conduct electricity.

3. Metallic bonding occurs when you have a metal in the solid or liquid state. The s and p valence electrons of metals are loosely held. They leave their “own” metal atoms. This forms a "sea" of electrons that surrounds the metal cations.

4. Atoms in metals lose electrons to form cations. Delocalized electrons surround the ions. Metallic bonds (electrostatic interactions between the ions and the electron cloud) hold the metallic solid together. Atoms are arranged like closely packed spheres.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.