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Home» class 9»Science» Chapter 4: Structure of the Atom

Na ^+ has completely filled K and L shells. Explain.   - Science

Question

Na ^+ has completely filled K and L shells. Explain.

 

Answer
  • Atomic Number of Sodium (Na): 11

  • Electronic Configuration of Na atom: 2, 8, 1

A sodium ion (Na^+) is formed by losing the 1 electron present in the outermost shell (M shell).

 

  • Electronic Configuration ofNa^+: 2, 8

     

Explanation:

  1. The K shell has 2 electrons (which is its maximum capacity).

  2. The L shell has 8 electrons (which is its maximum capacity).
    Therefore, Na^+ has completely filled K and L shells.