![]() ![]() This Site has been carefully prepared for your visit, and we ask you to honour and agree to the following terms and conditions when using this Site.Ĭopyright of and ownership in the Images reside with Murray Robertson. Welcome to "A Visual Interpretation of The Table of Elements", the most striking version of the periodic table on the web. Images © Murray Robertson 1999-2011 Text © The Royal Society of Chemistry 1999-2011 Political stability of top reserve holderĪ percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. The higher the value, the larger risk there is to supply.Ī percentile rank for the political stability of the top producing country, derived from World Bank governance indicators. The percentage of the world reserves located in the country with the largest reserves. The higher the value, the larger risk there is to supply. The percentage of an element produced in the top producing country. Low = substitution is possible with little or no economic and/or performance impact Medium = substitution is possible but there may be an economic and/or performance impact ![]() High = substitution not possible or very difficult. The availability of suitable substitutes for a given commodity. A higher recycling rate may reduce risk to supply. The percentage of a commodity which is recycled. The number of atoms of the element per 1 million atoms of the Earth’s crust. This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores. The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems.ĭata for this section been provided by the British Geological Survey.Īn integrated supply risk index from 1 (very low risk) to 10 (very high risk). Where more than one isotope exists, the value given is the abundance weighted average.Ītoms of the same element with different numbers of neutrons. This is approximately the sum of the number of protons and neutrons in the nucleus. The mass of an atom relative to that of carbon-12. The transition of a substance directly from the solid to the gas phase without passing through a liquid phase.ĭensity is the mass of a substance that would fill 1 cm 3 at room temperature. The temperature at which the liquid–gas phase change occurs. The temperature at which the solid–liquid phase change occurs. The arrangements of electrons above the last (closed shell) noble gas. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). The atomic number of each element increases by one, reading from left to right.Įlements are organised into blocks by the orbital type in which the outer electrons are found. Members of a group typically have similar properties and electron configurations in their outer shell.Ī horizontal row in the periodic table. Premium content recommendations are not available in all locales and may be in English only.A vertical column in the periodic table. ‡Daily Readiness requires a Fitbit Premium membership. ![]() ††Irregular heart rhythm notifications are only available in select countries and with select Fitbit products not intended for use by people under 22 years old or with known atrial fibrillation. Cancel before membership ends to avoid recurring fees. Purchase of the Bundle will exclude you from redeeming the 6-month Premium membership included with your device purchase. Only one Premium membership + 2-year protection plan (the "Bundle") per customer and for new and returning Premium members only. If you believe you are experiencing a medical emergency, call emergency services. If you have any concerns about your health, please talk to a healthcare provider. It is intended to provide information that can help you manage your well-being. This feature should not be relied on for any medical purposes. ◆◆The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. Not intended for use by people under 22 years old. See here for additional details. ◆The Fitbit ECG app is only available in select countries. T&C apply. 6-month Premium membership available in the Fitbit app after device activation or when checking out on. Must activate membership within 60-days of device activation (requires valid payment method). **New and returning Premium members only. Always-on display mode requires more frequent charging. *Battery life varies with use and other factors. ![]()
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