Electronegativity Original Scenario-Based Download PDF

Questions

1. 1.

   During a deep-space habitat mission, a materials engineer evaluates covalent bonds between four representative elements: carbon ($Z = 6$), fluorine ($Z = 9$), silicon ($Z = 14$), and chlorine ($Z = 17$). To predict which atom will pull shared electrons most strongly toward itself within a bond, she compares their relative positions on the periodic table. Based on periodic trends in electronegativity, which statement correctly identifies and explains the element with the highest electronegativity among these four?

   • A) Silicon has the highest electronegativity because its extra electron shell provides a larger surface area to capture bonding pairs from surrounding atoms.
   • B) Chlorine has the highest electronegativity because its seventeen protons exert a greater net electrostatic pull on shared electrons than any period 2 atom.
   • C) Fluorine has the highest electronegativity because its small atomic radius and high effective nuclear charge allow its nucleus to exert the strongest attraction on shared electrons.
   • D) Carbon has the highest electronegativity because its balanced valence shell avoids the significant interelectronic repulsions found in halogens.