Essay on Periodic Table

Electronegativity Analysis

This page explains what electronegative Is, and how and why it varies around the Periodic Table. It looks at the way that electronegative differences affect bond type and explains what is meant by polar bonds and polar molecules. If you are interested in electronegative in an organic chemistry context, you will find a link at […]

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History of the Periodic Table

History of the Periodic Table The periodic table was founded during the 1800’s due to the contributions of three main scientists; John Newlands, Dmitri Mendeleev, and Henry Moseley. – In 1865, John Newlands proposed the ‘Law of Octaves’, which stated that every eighth element shared similar properties (eg. Lithium, Sodium, and Potassium). This allowed him […]

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The Periodic Table Of Elements

The Periodic Table of Elements is used as a way of displaying all the known chemical elements; it is accepted and used all over the world. The periodic table’s layout is very well structured; it consists of vertical rows called groups and horizontal rows called periods. It is one of the most important resources in […]

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Element Osmium

1. Give the elements English and elemental symbol, if the elemental symbol is different then would be expected in English, such as tungsten W, describe why it has that symbol ▪ The element name is osmium and its elemental symbol is Os. Its atomic mass is 190.23 2. What is the elements atomic number, what […]

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