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1.   An ion contains X2- contains 10 electrons and 8 neutrons .what are the atomic number and the mass number of element X.

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1.   An ion contains X2- contains 10 electrons and 8 neutrons .what are the atomic number and the mass number of element X.

Asked by M.s.srinidhi21 4th March 2015, 6:06 PM
Answered by Expert
Answer:

There are 8 electrons. So,

Number of protons = 8

Atomic number = 8

Mass number = 8 + 8 = 16

Answered by Expert 4th March 2015, 6:18 PM
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