Periodic Table/Technetium/¹²¹Tc

← 120Tc122Tc →

¹²¹Tc

Technetium-121

Radioactive· Half-life: 22.0 ms

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

43

Neutrons (N)

78

Mass Number (A)

121

Atomic Mass

120.966140AMU

Spin / Parity

5/2+

Binding E/A

7.872keV

Natural Abundance

Trace / None

Half-life

22.0 ms

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

β⁻

100.0%

β⁻n

2n

Decay Chain

¹²¹TcTechnetium22.0 ms

β⁻100.0%

β⁻n¹²⁰Ru

2n¹¹⁹Tc

¹²¹RuRuthenium29.0 ms

β⁻100.0%

β⁻n¹²⁰Rh

2n¹¹⁹Ru

¹²¹RhRhodium74.0 ms

β⁻100.0%

β⁻n¹²⁰Pd11.0%

¹²¹PdPalladium290 ms

β⁻100.0%

β⁻n¹²⁰Ag0.80%

¹²¹AgSilver777 ms

β⁻100.0%

β⁻n¹²⁰Cd0.08%

¹²¹CdCadmium13.5 s

β⁻100.0%

¹²¹InIndium23.1 s

β⁻100.0%

¹²¹SnTin1.13 d

β⁻100.0%

¹²¹SbAntimonySTABLE

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

Other Isotopes of Technetium

83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122

← Back to TechnetiumData: IAEA NDS · ENSDF