In neutral atom, which particles are equivalent [RPMT 1997]

1.	In neutral atom, which particles are equivalent [RPMT 1997]
A.	\[{{p}^{+}},\,{{e}^{+}}\]
B.	\[{{e}^{-}},\,{{e}^{+}}\]
C.	\[{{e}^{-}},{{p}^{+}}\]
D.	\[{{p}^{+}},{{n}^{o}}\]
Answer» D. \[{{p}^{+}},{{n}^{o}}\]

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In neutral atom, which particles are equivalent [RPMT 1997]

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