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. Bring it home.A vertical column in the periodic table. Plus, features like Smart Guide and Live TV Pause enhance your entertainment experience when watching broadcast TV with an HD Antenna. Can’t find your remote? Use the free Roku mobile app as a handy remote or for voice controls and private listening. Stream what you love with sports, news, music, kids and family, food, science and tech, fitness, foreign language, and so much more. Best of all, you can customize your home screen to access your favorite streaming channels, cable box, Blu-ray player, gaming console, and more without switching inputs.Īccess over 500,000 movies and TV episodes across thousands of free or paid channels available on the Roku platform. A straightforward home screen and super-simple Roku remote make navigating your TV easy for anyone in your household. The built-in smart Roku platform gives you all the perks without all the unnecessary cables. Plus, this 50" television works with Apple Home, Google Home, and Amazon Alexa for all your smart home needs. Stream, control, and share content like videos, music, and more to your Element Roku TV using Apple AirPlay. Fast Wi-Fi connectivity makes accessing the best content quick and easy. HDR10 allows for richer, more lifelike colors and visual details – even in the darkest of scenes. Transform your picture quality with HDR10 compatibility, making your 50" television compatible with most 4K streaming content and 4K Blu-ray players. Element’s 50 inch Roku television features a striking 4K Ultra HD picture resolution for the best viewing experience.
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