Chemistry, 20.09.2021 05:30 chaosdamax8295

Nguyên tử nguyên tố X có tổng số hạt là 126, biết số nơtron nhiều hơn số electron là 12 hạt. Tính Z, A, viết kí hiệu nguyên tử.

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Nguyên tử nguyên tố X có tổng số hạt là 126, biết số nơtron nhiều hơn số electron là 12 hạt. Tính Z,...