Question

exam 2: periodicity & electron configuration/em spectrum
all of the following are correctly shown as increasing trends, except
ionization energy
electronegativity
atomic radius

Explanation:

Step1: Recall periodic - trends

Ionization energy and electronegativity increase across a period (left - to - right) and up a group (bottom - to - top).

Step2: Analyze atomic radius trend

Atomic radius decreases across a period (left - to - right) due to increasing nuclear charge pulling electrons closer and increases down a group (top - to - bottom) as new electron shells are added.

Answer:

Atomic Radius