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[" Q.20The mass number of an anion,"x^(3...

[" Q.20The mass number of an anion,"x^(3-)," is "14" .If there are "],[" ten clectrons in the anion,the number of neutrons in "],[" the nucleus of atom,"X_(2)" of the element will be "],[[" (1) "10," (2) "14," (3) "7," (4) "5]]

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