The elements Sodium (Na), Aluminum (Al), Phosphorus (P)
CHEMISTRY · Multi-part · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The elements Sodium (Na), Aluminum (Al), Phosphorus (P), and Chlorine (Cl) all appear in the third period of the periodic table. Their ability to accept an additional electron varies significantly.
(a) Rank these four elements in order of most negative to least negative electron affinity (that is, from the greatest tendency to accept an electron to the smallest).
(b) Provide a detailed explanation for your ranking that addresses subshell electron configurations, effective nuclear charge, and any notable deviations from the general periodic trend.