In a sample of which element would you expect to find a sea of electrons surrounding nuclei?

N

He

Na

Ag

Ag (Silver)

Explanation:

Silver (Ag) is the element that has the best conduction of heat and electricity, being considered as a noble metal because it is highly resistant to corrosion.

Silver has an atomic number of 47, which indicates its number of electrons and protons (as atoms are electrically neutral, the number of protons and electrons is equal) in their nuclear orbitals.

Silver has a relatively high atomic number compared to atoms like nitrogen (N), with atomic number 7, helium (He), a noble gas with atomic number 2, or sodium (Na) with atomic number 11.