Chemistry

Question Analysis
This question evaluates the understanding of periodic trends in electronegativity and the ability to identify the element with the lowest electronegativity.

Key Concept Explanation
Electronegativity generally decreases down a group and increases across a period. Among the given elements, potassium (K) is the least electronegative because it is the farthest to the left and at the bottom of its group.

Step-by-step Solution
1. Identify the position of each element in the periodic table.
2. Compare their positions to determine which one is farthest to the left and at the botto...