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Periodic Table Structure
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Why does the atomic radius of elements generally decrease across a period in the periodic table?

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Learning Path
Learning Path

Question & Answer
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Choose AnswerChoose the Best Answer

A

Increased nuclear charge pulls electrons closer to the nucleus

B

Electrons are added to higher energy levels

C

The number of protons decreases

D

Electrons repel each other more strongly in the same energy level

Understanding the Answer

Let's break down why this is correct

Across a period the number of protons in the nucleus goes up. Other options are incorrect because The mistake is thinking electrons go to a new, higher energy level; Some think protons drop as you move right.

Key Concepts

Atomic Radius
Periodic Trends
Nuclear Charge
Topic

Periodic Table Structure

Difficulty

medium level question

Cognitive Level

understand

Deep Dive: Periodic Table Structure

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Definition
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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