Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Electronegativity
B
Atomic mass
C
Metallic character
D
Non-metallic character
Understanding the Answer
Let's break down why this is correct
Answer
Atomic size is inversely related to ionization energy: the larger the atom, the easier it is to remove an electron, so ionization energy is lower. Electron affinity behaves similarly but in the opposite direction: the smaller the atom, the more energy is released when an electron is added, so electron affinity is higher for smaller atoms. Thus the property that is inversely related to electron affinity is atomic size. For example, fluorine is a small atom and has one of the highest electron affinities, while cesium is large and has a very low electron affinity.
Detailed Explanation
Electronegativity measures how strongly an atom pulls electrons. Other options are incorrect because Weight is not directly tied to electron affinity; How metal-like an element is does not say how much energy it gains when an electron joins.
Key Concepts
Periodic properties
Trends in the periodic table
Atomic structure
Topic
Periodic Properties
Difficulty
hard level question
Cognitive Level
understand
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