Requirements management - Overview. 1  The purpose of requirements management is to ensure that an organization documents, verifies, and meets the needs and expectations of its customers and internal or external stakeholders. Requirements management begins with the analysis and elicitation of the objectives and constraints of the organization.
The highest occupied electron shell is called the valence shell, and the electrons occupying this shell are called valence electrons. The chemical properties of the elements reflect their electron configurations. For example, helium, neon and argon are exceptionally stable and unreactive monoatomic gases.
Example 3: Note that a carbon atom's valence shell has \(4\) electrons. It can either lose four electrons or gain four electrons to get a full valence shell. Note that either transition requires the transfer of the same number of electrons, so which ion results depends on the other chemicals involved.