Nitrogen (N). Diagram of the nuclear composition,electron configuration,chemical data,and valence orbitals of an atom of nitrogen-14 (atomic number: 7),the most common isotope of the element nitrogen. The nucleus consists of 7 protons (red) and 7 neutrons (orange). Seven electrons (white) occupy available electron shells (rings). The stability of an element's outer (valence) electrons determines its chemical and physical properties. Nitrogen,vital for life on Earth,is a non-metal in group 15,period 2,and the p-block of the periodic table. As a gas (N2) it forms 78 percent of the atmosphere. It liquefies at minus 196 degrees Celsius | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Clarivan, Carlos |
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