Understanding the scientific rationale behind Yttrium's position in the periodic table:
Belongs to Group 3 because it has 3 valence electrons (4d¹ 5s²).
Belongs to Period 5 because its outermost electrons occupy n=5.
Belongs to the d-block because its differentiating electron enters the 4d subshell.
Classified as a transition metal and often grouped with rare earths due to its +3 ionic radius.
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: 3.
Extracted from rare-earth mineral ores such as monazite, xenotime (YPO₄), and bastnäsite.
Named after the Swedish village of Ytterby, which yielded four elements (Y, Tb, Er, Yb)
Yttrium compounds cause eye/skin irritation; yttrium dust presents a moderate inhalation hazard.