What is the electron configuration of a neutral atom of sulfur (S)?

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Question: What is the electron configuration of a neutral atom of sulfur (S)?

Options:

Correct Answer: [Ne] 3s2 3p4

Solution:

Sulfur has 16 electrons, and its electron configuration is [Ne] 3s2 3p4.

What is the electron configuration of a neutral atom of sulfur (S)?

What is the electron configuration of a neutral atom of sulfur (S)?

Step 1: Identify the atomic number of sulfur (S), which is 16. This means a neutral sulfur atom has 16 electrons.
Step 2: Determine the electron configuration by filling the electron shells according to the Aufbau principle.
Step 3: Fill the first shell (1s) with 2 electrons: 1s2.
Step 4: Fill the second shell (2s and 2p) with 8 electrons: 2s2 2p6.
Step 5: Fill the third shell (3s and 3p) with the remaining 6 electrons: 3s2 3p4.
Step 6: Combine all the filled shells to write the complete electron configuration: 1s2 2s2 2p6 3s2 3p4.
Step 7: Use the noble gas shorthand notation by replacing the first 10 electrons (1s2 2s2 2p6) with [Ne] (neon), resulting in [Ne] 3s2 3p4.

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