Download article as a PDF. In most states and jurisdictions, security deposit laws allow a landlord to deduct from a security deposit for any damage or excessive dirtiness, but not for any expected, normal wear-and-tear.
Nonmetals also have high electron affinity. This means that it is energetically favorable to add an electron to a nonmetal. So, nonmetals can be easily reduced. Metals tend to have low electron affinity so it is more difficult to add electrons (or reduce them). In short: Metals have low ionization energies and low electron affinities so they are readily oxidized. Nonmetals have high ionization energies and high electron affinities so they are readily reduced.
Noncritical systems that provide reference information that is not business critical do not need to be on the latest version of an operating system, and they might not need to be upgraded, if, for example, the product they serve is out of support already. Your CIO should have a clear idea what technical debt the company should have.