40 Ar, because of its weight its very close to 40g/mol
Ar-40 accounts for 99.6% of the total.
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.
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.
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
it must eject the extra nucleons and should be conveted into a stable isotope.
Ar-40 accounts for 99.6% of the total.
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.
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.
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.
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
it must eject the extra nucleons and should be conveted into a stable isotope.
This must be a typo of some sort. No, argon is not "a hydrogen," whatever that means.
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.
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.
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.
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.
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.