Understanding the scientific rationale behind Manganese's position in the periodic table:
Belongs to Group 7 because it has 7 valence electrons (3d⁵ 4s²).
Belongs to Period 4 because its outermost electrons occupy n=4.
Belongs to the d-block because its valence subshell is 3d.
Classified as a transition metal, possessing the widest range of common oxidation states (+2 to +7) in Period 4.
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.
Abundant in minerals like pyrolusite (MnO₂), rhodochrosite, and vast polymetallic manganese nodules on the deep ocean floor.
From Latin 'magnes' meaning magnet, historically confused with magnetic iron ores
Chronic occupational inhalation of manganese dust causes Manganism, a debilitating neurological disorder resembling Parkinson's disease.