Answer :
The element with the highest electronegativity among the options provided is nitrogen (N). Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond.
1. Nitrogen (N) has a higher electronegativity value compared to Rubidium (Rb), Calcium (Ca), and Silicon (Si).
2. In the periodic table, electronegativity generally increases from left to right across a period and decreases from top to bottom within a group.
3. Nitrogen, being a non-metal, tends to have a higher electronegativity than metals like Rubidium (Rb) and Calcium (Ca) and even Silicon (Si), which is a metalloid.
Therefore, among the options given, Nitrogen (N) has the highest electronegativity.
