Chemistry

Question Analysis
This question evaluates the student's ability to use shorthand notation to represent the electron configuration of an element, specifically focusing on the valence shell.

Key Concept Explanation
Shorthand notation uses the symbol of the nearest noble gas (in square brackets) to represent the filled inner electron configuration, followed by the valence shell configuration.
For chlorine (atomic number 17), the nearest noble gas is neon (Ne, atomic number 10).

Step-by-step Solution
1. Identify the nearest noble gas: Neon (Ne, atomic number 10).
2. Write the shorthand notation: [Ne].
3. Determine the remaining electrons: 17 - 10 = 7 elect...