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Question & Answer
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Elements in the same group have similar reactivity due to their valence electron configuration.
Elements in the same period are more reactive because they have the same number of electron shells.
Noble gases are highly reactive due to their full outer electron shells.
The atomic number determines reactivity regardless of position in the table.
Understanding the Answer
Let's break down why this is correct
Elements in one column share the same outer‑electron pattern. Other options are incorrect because Period members do not automatically become more reactive just because they have the same number of shells; Noble gases are called inert because their outer shell is full, meaning they rarely need extra electrons.
Key Concepts
Periodic Table Structure
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Deep Dive: Periodic Table Structure
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Definition
The structure of the Periodic Table organizes elements based on their properties in a tabular form. It includes periods, groups, noble gases, and the arrangement of elements according to their atomic numbers. Understanding the structure helps in predicting the behavior and characteristics of elements.
Topic Definition
The structure of the Periodic Table organizes elements based on their properties in a tabular form. It includes periods, groups, noble gases, and the arrangement of elements according to their atomic numbers. Understanding the structure helps in predicting the behavior and characteristics of elements.
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