What is the electronic configuration of a sodium ion (Na+)?
Correct Answer: 1s2 2s2 2p6
- Step 1: Understand that sodium (Na) has an atomic number of 11, which means it has 11 electrons when it is 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+) is formed when sodium loses one electron.
- Step 4: Remove one electron from the outermost shell (3s), which leaves us with 1s2 2s2 2p6.
- Step 5: Conclude that the electronic configuration of a sodium ion (Na+) is 1s2 2s2 2p6.
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