Chemistry

Question Analysis
This question tests the student's ability to arrange elements in order of increasing electronegativity based on their positions in the periodic table.

Key Concept Explanation
Electronegativity trend across a period: Increases from left to right.
Electronegativity trend down a group: Decreases from top to bottom.

Step-by-step Solution
1. Identify the positions of the elements in the periodic table: P (Group 15), S (Group 16), O (Group 16).
2. Recognize that electronegativity increases from left to right in a period.
3. Arrange the...