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An ion M^(2+) contains 10 electrons and ...

An ion `M^(2+)` contains 10 electrons and 12 neutrons .What is the atomic number and mass number the element M? Name the element.

Text Solution

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No of electons in `M^(2+)` ion =10
Atomic numbr of element M= 10 + 2 = 12
No of protons in element M=12
Mass number of element M = No of protons + No of neutrons =12+12=24
The element M with atomic numbr 12 is magnesium (Mg)
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