Chemistry

Question Analysis
This question tests the student's understanding of the periodic trends in electronegativity, specifically how it changes across a period and down a group.

Key Concept Explanation
Electronegativity increases across a period from left to right due to the increasing nuclear charge and decreasing atomic radius. Electronegativity decreases down a group from top to bottom because the increasing atomic radius outweighs the effect of increased nuclear charge.

Step-by-step Solution
1. Recall the periodic trends in electronegativity.
2. Across a period, electronegativity increases from left to right.
3. Down a group, electronegativity decreases from top to botto...