| स्पीशीज | प्रोटॉन $(p)$,इलेक्ट्रॉन $(e^-)$,न्यूट्रॉन $(n)$ |
| $(i) \ _{15}^{31}P$ | $p=15, e^-=15, n=16$ |
| $(ii) \ _{11}^{23}Na^{+}$ | $p=11, e^-=10, n=12$ |
| $(iii) \ _{16}^{32}S^{2-}$ | $p=16, e^-=18, n=16$ |
| $(iv) \ _{101}^{235}X$ | $p=101, e^-=101, n=134$ |
| $(v) \ _{20}^{40}Ca^{2+}$ | $p=20, e^-=18, n=20$ |
| $(vi) \ _9^{19}F^{-}$ | $p=9, e^-=10, n=10$ |
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