MCAT Question A Day - 4/8/13
Reading from top to bottom down a column of the Periodic Table of Elements, the atomic radius becomes
A. larger, owing to increased nuclear charge that is only partially shielded by additional valence electrons.
B. smaller, owing to increased nuclear charge that is only partially shielded by additional valence electrons.
C. smaller, owing to placement of additional electrons in orbitals that are farther from the nucleus.
D. larger, owing to placement of additional electrons in orbitals that are farther from the nucleus.
