Chemistry
Why do and show a similar behaviour ? Atomic mass chlorine is 35.5. What is the ratio of 37Cl and 35Cl in chlorine?
Atomic Structure
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Answer
and show a similar behaviour because they are isotopes of chlorine. They have the same atomic number (17) and same number of protons. They also have the same number of electrons in a neutral atom and same electronic configuration. Since, chemical properties depend mainly on electronic configuration, so both isotopes show similar chemical behaviour.
Ratio of 35Cl and 37Cl in chlorine :
Let the number be
35Cl = x
37Cl = y
35x, 37y
Atomic mass of chlorine = 35.5
= 35.5
35x + 37y = 35.5x + 35.5y
37y - 35.5y = 35.5x - 35x
1.5y = 0.5x
x : y = 3 : 1
The ratio of 35Cl and 37Cl in chlorine will be 3 : 1.
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