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- Chemical element (8169 bytes)
1: ...llest particle of such an element is an [[atom]], which consists of [[electron]]s centered on a [[nuc...
3: ... may differ in the number of neutrons, and are known as [[isotope]]s of the element. The [[atomic mas...
5: ...t elements are [[hydrogen]] and [[helium]], which were the first elements to appear in the [[Big Bang...
7: ...h short [[half-life|half-lives]] so that any that were present at the formation of Earth have long si...
9: ... in the [[periodic table]], which groups elements with similar chemical properties together. - Nitrogen (10073 bytes)
1: ...eft=[[carbon]] | right=[[oxygen]] | above=- | below=[[phosphorus|P]] | color1=#a0ffa0 | color2=green ...
24: {{Elementbox_vanderwaalsrad_pm | [[1 E-10 m|155]] }}
27: {{Elementbox_thermalcond_wpmkat300k | 25.83 m}}
39: ...phere. It [[condensation|condenses]] at 77 K and freezes at 63 K. Liquid nitrogen is a common [[cryo...
44: ... Liquid nitrogen is produced by [[distillation]] from [[liquid air]].
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