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What is the electronic configuration of the sodium ion (Na+)?

Practice Questions

Q1
What is the electronic configuration of the sodium ion (Na+)?
  1. 1s2 2s2 2p6
  2. 1s2 2s2 2p5
  3. 1s2 2s2 2p4
  4. 1s2 2s2 2p3

Questions & Step-by-Step Solutions

What is the electronic configuration of the sodium ion (Na+)?
  • Step 1: Understand that sodium (Na) has an atomic number of 11, which means it has 11 electrons when neutral.
  • Step 2: Write the electronic configuration for neutral sodium (Na), which is 1s2 2s2 2p6 3s1.
  • Step 3: Recognize that a sodium ion (Na+) has lost one electron from its neutral state.
  • Step 4: Remove one electron from the outermost shell (3s), resulting in the configuration 1s2 2s2 2p6.
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