Chemistry PLTL Workshop 13 Icebreaker

Periodic Table Trends

100

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

200

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

300

Explain what shielding is.

the reduction in attraction between the nucleus and outer (valence) electrons, caused by the repulsion of intervening inner-shell electrons

Part 2

100

Define atomic radius and describe the periodic trend for atomic radius.

Decreases left to right

Increases top to bottom

200

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 

300

Explain how your favorite periodic table trend works.

ex: electronegativity is _, and this makes sense because ___.

PL decision