Identify the main-group element X that could form the compound with the following Lewis structure: 
Definitions:
Supermax Prison
A maximum security prison designed to house the most dangerous inmates, featuring strict control and surveillance measures.
Social Control
Mechanisms, strategies, and institutions society employs to persuade or enforce conformity to established norms and rules.
Prison Officer Authority
The legal power and discretion granted to correctional officers over inmates in a prison system to maintain order and enforce rules.
Legalistic Authority
A form of authority based on a system of rules and norms that are considered legal and binding for those subject to them.
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