Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 4: Problem 14

How was Moseley's arrangement of the elements in the periodic table different from Mendeleev's?

Short Answer

Expert verified
Moseley's arrangement of the Periodic Table differs from Mendeleev's as the former is based on atomic number while the latter is based on atomic weight. Moseley's arrangement corrected the anomalies 'misplacements' of Mendeleev's table.

Step by step solution

01

Understand Mendeleev's Arrangement

Mendeleev arranged elements based on atomic weight and noticed a pattern (hence, Periodic Table). He left gaps for elements not then known, but whose existence he predicted.
02

Understand Moseley's Arrangement

Moseley suggested a new arrangement based on atomic number (number of protons in the nucleus of an atom). This took into account the charge of the nucleus (atomic number), rather than the atomic weight.
03

Compare The Two Arrangements

The comparison lays in the fundamental property used for arrangement. Mendeleev used atomic weight while Moseley used atomic number. Mendeleev's table had elements that seemed out of place when considering their chemical properties, which Moseley’s table corrected.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Give an example of a nuclear reaction. Describe the process by which it takes place.

What is the term for the energy released when an atom gains an electron?

What are elements \(90-103\) called?

How does the periodic trend of atomic radius relate to the addition of electrons?

The electron configuration of argon differs from those of chlorine and potassium by one electron each. Compare the reactivity of these three elements, and relate them to their electron configurations.
See all solutions

Recommended explanations on Chemistry Textbooks

The Earths Atmosphere

Read Explanation

Chemical Analysis

Read Explanation

Chemical Reactions

Read Explanation

Ionic and Molecular Compounds

Read Explanation

Physical Chemistry

Read Explanation

Chemistry Branches

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free