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anonymous
 one year ago
Why is the atomic mass of many elements not a whole number?
A.
Elements are unstable.
B.
An element may have isotopes with different numbers of neutrons.
C.
The atomic mass includes all the electrons.
D.
Isotopes are always expressed in decimals.
anonymous
 one year ago
Why is the atomic mass of many elements not a whole number? A. Elements are unstable. B. An element may have isotopes with different numbers of neutrons. C. The atomic mass includes all the electrons. D. Isotopes are always expressed in decimals.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im looking right now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The main reason that the atomic mass of elements is not a whole number is due to the presence of different isotopes  these have the same number of protons in the nucleus but a different number of neutrons  so their masses are different even though chemically they are identical. The two isotopes of Chlorine are 35Cl (75.77%) and 37Cl (24.23%) giving an overall "average" mass of 35.4527.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am thinking it would be an element may have isotopes with different numbers of neutrons

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so i will fan one of u and then someone fan the other one that i didnt

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so in other words it is B

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and thx for yalls help i have more i need help with so i will close this and then start a new one
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