Periodic Table Trends
Define electronegativity and describe the trend.
a measure of an atom's ability to attract shared electrons in a chemical bond
Increases left to right
Decreases top to bottom
Define atomic radius and describe the periodic trend for atomic radius.
Decreases left to right
Increases top to bottom
Define electron affinity and describe the trend.
the energy change—usually energy released—when a neutral gaseous atom accepts an electron to form a negative ion
Increases left to right
Decreases top to bottom
Describe ionization energy and describe the trend.
the minimum energy required to remove the most loosely bound electron from an isolated, gaseous atom or ion
increases left to right
decreases top to bottom
Explain what shielding is.
the reduction in attraction between the nucleus and outer (valence) electrons, caused by the repulsion of intervening inner-shell electrons
ex: electronegativity is _, and this makes sense because ___.
PL decision