2016年8月14日 · Neon-20 has a mass of 19.9924 amu Neon-21 has a mass of 20.9940 amu Neon-22 has a mass of 21.9914 amu. The relative abundance of 20Ne is 90.92% and 21 Ne is .257% and 22 Ne is 8.82%.

2017年11月28日 · Neon has two major isotopes, Neom-20 and Neon 22. Out of every 250 neon atoms, 225 will be Neon-20 (19.992 g/mol), and 25 will be Neon-22 (21.991 g/mol). What is the average atomic mass of Neon?

2017年2月2日 · Based on the data table below, which shows three isotopes of neon, what is a correct numerical setup for calculating the average atomic mass of neon? Chemistry Matter Atomic Mass 1 Answer

2016年9月11日 · It depends, but usually 10 There are many isotopes of neon and each has a different number of neutrons. Neon always has 10 protons, but the number of neutrons varies with each isotope. The most common are ""_10^20Ne (10 protons, 90.48% abundance), ""_10^21Ne (11 protons, .27% abundance), and ""_10^22Ne (12 protons, 9.25% abundance).

2016年9月11日 · Neon has an atomic mass of about 20 this isotope contains 10 protons and 10 neutrons. Actually Neon would be lested as having an atomic mass of about 20.18 because of a mixute of isotopes. Z= Atomic number the number of protons in the nucleus which defines the element. in this case Z=10 and this means neon but there is also 10 neurons in the nucleus of the major isotope whcich gives it ^20Ne ...

2015年7月29日 · They are simply isotopes of each other. The Neon - 22 isotope has two extra neutrons in the nucleus than the Neon - 20 isotope. The atomic number and hence the proton number is the same in both.

Since isotopes have the same no of protons at its nucleus, they have the same chemical properties. However the fact that they have different no. of neutrons means that the isotopes will have different physical properties (e.g. density, mass). For example, if there are two isotopes with different nucleon no., the one which has a higher nucleon ...

2018年3月22日 · Neon has 3 naturally occurring isotopes. Neon-20, Neon-21, and Neon-22. Hydrogen has 1 proton and zero neutrons. Oxygen has 8 protons and 8 neutrons (I'm assuming the most naturally abundant isotopes). This will give you a nucleus with 10 protons (Neon) and 8 neutrons, and it would be Neon-18.

2015年7月15日 · Later, English chemist and physicist Francis William Ashton perfected the mass spectograph so that he could use mass spectography to determine the isotopes of elements. In 1910 he discovered neon-20 and neon-22. By 1935 most of the principal isotopes and their relative proportions had been determined, save for a handful of elements." Source:

2016年9月11日 · For the same reason that chemists use isotopes to label a particular compound for analysis. Isotopes, ""^15N, ""^13C, are the same chemically as the isotope they replace. They are not the same spectroscopically. Mass spectroscopy would certainly differentiate between the isotopes. In addition, there might be additional spectroscopies that allows the isotope to be interrogated: ""^2H NMR ...