Diamond-like crystal structure (Si, Ge, C)हीरे जैसी क्रिस्टल संरचना (Si, Ge, C)Diamond-like crystal structure (Si, Ge, C)
NCERT Fig 14.3 · Class 12 Physics · Chapter 14 · interactive diagram
Read Chapter 14 with this diagramइस डायग्राम के साथ अध्याय 14 पढ़ेंIs diagram ke saath Ch 14 padhiyeAll Physics diagramsसभी भौतिकी डायग्रामSaare Physics diagrams
Parts and what they mean
- Each atom has 4 nearest neighbours (हर परमाणु के 4 निकटतम पड़ोसी) — The gold atom bonds to 4 neighbours at the corners of a regular tetrahedron (bond angle 109.5°). It shares one valence electron with each neighbour.
- The 4 covalent bonds of one atom (एक परमाणु के 4 सहसंयोजक आबंध) — Bond length = a√3/4: 2.35 Å for Si.
- Covalent (valence) bond (सहसंयोजक (संयोजकता) आबंध) — A pair of electrons shared by two neighbouring atoms.
- Atom on a corner or face of the cube (घन के कोने या फलक पर परमाणु) — All atoms are the same element (C, Si or Ge); colours only show the two interpenetrating sets of sites.
- Atom inside the cube (घन के भीतर परमाणु) — Sits a quarter of the way along a body diagonal from a corner atom.
- Lattice spacing a (जालक अंतराल a) — Edge of the cubic cell: 3.56 Å (C), 5.43 Å (Si), 5.66 Å (Ge). For Si, 8 atoms per a³ gives 5 × 10²⁸ atoms m⁻³.
- Cubic unit cell (घनीय एकक सेल) — The repeating cube of the crystal.
Original diagram drawn by Simple Learning Hub, based on NCERT Fig 14.3. Report a mistake