Which substance can be described as cations bonded together by mobile electrons?a. S8(s)b. Ag(s)c. SiO2(s)d. KCl(s)e. Kr(l)

The substance describing the cations bonded by mobile electrons is Ag. Thus option B is correct.

The chemical bond with the ability to exist as a cation with mobile electrons has been a metallic bond.

The metallic bond if found to be existing of central nuclei, with the sea of electrons present outside the nucleus, and has been shared by the atoms.

With the presence of the metal or metallic bond in a compound, the cation has been bonded with the mobile electrons.

The chemical bond present in the following compounds has been:

The substance with the presence of metallic bond has been Ag. Thus, Ag has presence of cations bonded together by mobile electrons. Thus, option B is correct.

For more information about the cations, refer to the link:

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Ag(s)

Explanation:

Metal atoms are held together by the metallic bond. The metallic bond consists of cations held together by a sea of mobile electrons.

Thus, the crystal of Ag(s) is composed of silver ions held together by a sea of mobile electrons. Electrostatic forces of attraction holds the crystal together.