99Sn

Tin-99

Radioactive· Half-life: 24.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

50

Neutrons (N)

49

Mass Number (A)

99

Atomic Mass

98.948495AMU

Spin / Parity

9/2+

Binding E/A

7.903keV

Natural Abundance

Trace / None

Half-life

24.0 ms

Decay Modesoverview · half-life · α · β⁻ · β⁺

β⁺
100.0%
β⁺p
5.0%

Decay Chain

β⁺100.0%
β⁺p98Cd5.00%
99InIndium3.11 s
β⁺100.0%
β⁺p98Ag0.29%
99CdCadmium17.0 s
β⁺100.0%
β⁺α95Rh1.00%
β⁺p98Pd0.21%
99AgSilver2.07 min

7-step decay chain → stable · Primary path shown · branching ratios indicated

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