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Câu 30. Số nuclôn không mang điện có trong một hạt nhân $_{86}^{222}\textrm{Rn}$

Câu 30. Số nuclôn không mang điện có trong một hạt nhân 86222Rn_{86}^{222}\textrm{Rn}86222​Rn là

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Câu 30. Số nuclôn không mang điện có trong một hạt nhân $_{86}^{222}\textrm{Rn}$ là