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D/CI&SP. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/dcisp/director-counter-intelligence-and-security-programs (Accessed: 5 July 2026).
Nitrogen (Symbol: N, Atomic number: 7) is a non-metal element discovered in 1772. It belongs to period 2 and group 15 of the periodic table. It is the most abundant\u2026