CBSE Class 9 Answered
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 | 04 Mar, 2015, 06:06: PM
Expert Answer
There are 8 electrons. So,
Number of protons = 8
Atomic number = 8
Mass number = 8 + 8 = 16
Answered by | 04 Mar, 2015, 06:18: PM
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