Electron distribution in a sodium atom (2, 8, 1)सोडियम परमाणु में इलेक्ट्रॉन वितरण (2, 8, 1)

NCERT cf. Fig 8.11 · interactive diagram

Parts and their functions

• Nucleus of ²³₁₁Na (²³₁₁Na का नाभिक) — Z = 11 protons; A = 23, so neutrons = 23 − 11 = 12.
• K-shell: 2 electrons (K-कोश: 2 इलेक्ट्रॉन) — First shell full (2 × 1² = 2).
• L-shell: 8 electrons (L-कोश: 8 इलेक्ट्रॉन) — Second shell full (2 × 2² = 8).
• M-shell: 1 valence electron (M-कोश: 1 संयोजकता इलेक्ट्रॉन) — Sodium loses this one electron to get an octet (2, 8) → valency 1.

Original diagram drawn by Simple Learning Hub, based on NCERT cf. Fig 8.11. Report a mistake