Question

Argon has three isotopes with relative atomic masses of 36, 38 and 40. Given that the average relative atomic mass of naturally occurring argon is 39.95. Which of the following statements must be correct?

Answer 1

Explanation:

Here average atomic mass of naturally occuring argon is 39.5 and this value is very close to the 40 in comparison to 36 and 38. So that Argon with relative mass 40 is more abundant than others.

Answer 2

Answer:

Argon has three isotopes with relative atomic masses of 36, 38 and 40. Given that the average relative atomic mass of naturally occurring argon is 39.95. Which of the following statements must be correct?

Explanation:

• As we know that Argon has three isotopes with their atomic masses as- 36, 38 and 40 respectively.
• The Argon and its isotopes are stable that is they are not radioactive and also they are produced by radioactivity processes.
• This three isotopes of Argon are most stable because- in the periodic table the atomic mass of Argon is 39.948 which is closet to Ar- 40.
• The isotopes of Argon which occur in the abundances are as- isotopes of Argon which atomic number 36, 38 and 40 are- 0.34%, 0.07% and 99.59%.
• In all Argon has 26 known isotopes.
• The most common isotope of Argon is Argon- 40. It is the decay of potassium.

#SPJ6