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40 Ar, because of its weight its very close to 40g/mol

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Q: Which isotope of argon must be most common?
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Which isotope of argon is must common?

Ar-40 accounts for 99.6% of the total.


How many protons neutrons and electrons are in one most common isotope of chlorine?

Chlorine has the atomic number of 17. To keep it neutral then, it must have 17 protons and 17 electrons. Chlorine's most common isotope is 35Cl. That means it has 35 - 17 = 18 neutrons.


What is the mass number of the most common isotope of carbon?

As the atomic number of nitrogen is 7, the most abundant isotope of this atmospheric gas must have 7 neutrons (14.007 - 7 = about 7), and this will make nitrogen-14 that isotope that is most abundant.


What is the total number of subatomic particles in sulfur?

In order to answer this question, a particular isotope of sulfur must be considered. The most common isotope is sulfur-32, which has 16 protons, 16 neutrons, and 16 electrons for a total of 48.


Is the isotope at 40.0 amu more abundant than isotope at 42.0?

If you are reffering to Calcium, Ca, the isotope with a mass of 40 is more abundant. The mass of Ca is about 40amu, so the isotope Ca-40 must be more common than Ca-42


What is the breakdown of a radioactive isotope into a stable isotope?

it must eject the extra nucleons and should be conveted into a stable isotope.


Is argon a hydrogen?

This must be a typo of some sort. No, argon is not "a hydrogen," whatever that means.


How many electrons and neutrons does potassium has?

Potassium's atomic number is 19. That means that it must have 19 protons and 19 electrons to be electrically neutral. 39K is potassium's most common isotope, with 39 - 19 = 20 neutrons.


How many electrons and nuetrons are in magnesium?

Magnesium's atomic number is 12. Thus, to be electrically neutral, it must have 12 protons and 12 electrons. 24Mg is magnesium's most common isotope having 24 - 12 = 12 neutrons.


In Adam that has 13 protons and 15 neutrons is an isotope of what element?

13 protons means it must be aluminum (Al). 15 neutrons means its atomic mass will be 28. This is not aluminum's most abundant isotope, but it is still aluminum.


Most abundant isotope of uranium is?

More than 99%of naturally occurring uranium is U-238. The valuable U-235 makes up less than 1% of uranium, and must be "enriched" in complicated processes.


How many protons nuetrons and electrons does argon have?

In order to answer this question, the specific isotope of argon must be known. However, I will answer it using argon-40 because it makes up over 99% of the atoms of argon. Argon-40 has a mass number of 40, meaning that the sum of protons and neutrons in the nuclei of its atoms is 40. In order to use this information to determine the numbers of protons and neutrons, you also need to know the atomic number, which is the number of protons in the nucleus of its atoms. Argon's atomic number is 18, so we know that all argon atoms have 18 protons. To calculate the number of neutrons, we subtract the atomic number from the mass number, which is (40-18)=22 neutrons. The number of electrons equals the number of protons in a neutral atom, so argon atoms have 18 electrons. So, to sum things up, neutral atoms of argon-40 contain 18 protons, 22 neutrons, and 18 electrons.