Which atom will form an ion having 1-unit positive charge?
Which atom will not form an ion?
Name the atomie species which contains 11 protons, 10 electrons and 12 neutrons.
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Answer:
No of electrons in M
2+
ion =10
No of electrons in M = 12
∴ No of protons = No of electrons = 12
∴ Atomic no = 12
Mass number = Atomic number + No of protons = 12+12=24
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