Mendeleev

Ages

Introduction

Summary

In 1869 the Russian chemist D. I. Mendeleev discovered that pure chemical elements (containing a single kind of atom) could be classified in a table, in families,  according to the number of protons in their nuclei. This number, called the atomic number, increases from top to bottom and from left to right on this table. The elements arranged in the same column have similar chemical properties.

Goals

• To explore the Periodic Table and the properties of the elements.

Features

Rollover the elements to see their properties.

Student sheet

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Tags

Mendeleev structure-of-matter atom periodic-table electronegativity atomic-radius ionization-energy inert-gases noble-gases classification electron-configuration melting boiling oxidation