An atom in a pure metal that's face-centered cubic has neighbor atoms.

Answer is: an atom in a pure metal that's face-centered cubic has 12 neighbor atoms.

Fce-centered cubic has eight atoms at each corner of the cube and six atoms at each face of the cube.

Metals that possess face-centered cubic structure are copper (Cu), aluminum (Al), silver (Ag) and gold (Au).

There is three types of cubic cell:

1) simple cubic unit cell.

2) body-centered cubic unit cell.

3) face-centered cubic-unit cell.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons