Deuterium:also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other being protium or hydrogen-1). The nucleus of a deuterium atom,called a deuterium,contains one proton and one neutron,whereas the far more common protium has no neutron in the nucleus.
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Jet streams are fast flowing, narrow, meandering air currents in the atmospheres of some planets, including Earth
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The engine ran for 10 second
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carbon
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Atomic radius represents the distance from the nucleus to the outer shell of an element.
Noble gas. Noble gas, any of the seven chemical elements<span> that make up Group 18 (VIIIa) of the </span>periodic table<span>. The </span>elements<span> are </span>helium<span> (</span>He<span>), </span>neon<span> (</span>Ne<span>), argon (Ar), krypton (Kr), </span>xenon<span> (</span>Xe<span>), radon (Rn), and oganesson (Og)</span>