Understanding the scientific rationale behind Bromine's position in the periodic table:
Belongs to Group 17 (Halogens) because it possesses 7 valence electrons (4s² 4p⁵).
Belongs to Period 4 because its outermost electrons occupy principal shell n=4.
Belongs to the p-block because its differentiating electron enters a 4p orbital.
Classified as a reactive nonmetal due to its strong halogen electronegativity (2.96) and diatomic volatile liquid nature.
Hover or tap any shell orbit ring to inspect electron counts and 2n² capacities.
Educational Note: This Niels Bohr planetary model visually illustrates principal quantum energy shells ($n=1, 2, 3\dots$) and electron counts. In modern quantum mechanics (Schrödinger model), electrons do not orbit in fixed circular planetary tracks, but exist as 3D probability clouds (orbitals: $s, p, d, f$) governed by the Heisenberg uncertainty principle.
Neutral ground state configuration. Valence electrons: 7.
Extracted from concentrated natural brines, ocean seawater, and salt lakes like the Dead Sea (which contains up to 5,000 ppm Br).
From Greek 'bromos' meaning stench, due to its suffocating odor
Liquid bromine causes severe, agonizing chemical burns that heal very slowly; inhaling the vapor causes fatal pulmonary edema.