Natural nitrogen (7 N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15. Thirteen radioisotopes …

2023年1月14日 · 法国物理学家皮埃尔·居里夫妇对铀和铀的矿石进行了深入研究，发现了两种放射性更强的新元素，即钋（Po）和镭（Ra）。 天然放射性的发现开拓了一个新的研究领域。 玛 …

The atomic nucleus of the nuclide 14 N consists of 7 neutrons and the element-specific 7 protons; 14 N is one of the few stable isotopes that has an odd number of both protons and neutrons. …

氮-14是氮的 穩定同位素 之一，占了天然氮的99.636%，是最普遍的氮同位素。 氮-14是非常少见的 质子和中子数都是奇数的稳定核素 （英语：Even and odd atomic nuclei#Odd proton, odd …

In nuclear physics, properties of a nucleus depend on evenness or oddness of its atomic number (proton number) Z, neutron number N and, consequently, of their sum, the mass number A. …

2016年10月28日 · Nitrogen is the 7th element in the periodic table so it has 7 Protons and an equal number of electrons (7!). Since the mass number given is 14 then number of neutrons = …

The complete nuclear reaction is 7 14 N + 0 1 n → 6 14 C + 1 1 H. This reaction shows nitrogen-14 reacting with a neutron to produce carbon-14 and a proton, preserving the balance of mass …

Detailed decay information for the isotope nitrogen-14 including decay chains and daughter products.

7 : n : 14 : 14.003 074 004 43(20) 0.996 36(20) [14.006 43, 14.007 28] 15 : 15.000 108 898 88(64) 0.003 64(20) ...

氮是一种化学元素，化学符号为n，原子序数为7。在自然界中，氮主要以单质形态存在，即氮气（n₂）。氮气是一种无色、无味且化学性质相对惰性的气体，占据了地球大气总体积的 …