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Mendelevium Isotopes

Proton number: 101

Stable Isotopes

There is no Mendelevium Stable isotopes known

Natural Radioactive isotopes

There is no Mendelevium Natural Radioactive isotopes known

Artificial Radioactive isotopes


Mendelevium radioactive isotope number 1: 245Md
Neutrons: 144;
Jn: 1/2-;
Decay: α
SF;
t1/2: 0.0009s ≈ 0.90 ms;

Mendelevium radioactive isotope number 2: 245Md
Neutrons: 144;
Jn: Unknown;
Decay: ε
α;
t1/2: 0.35s ;

Mendelevium radioactive isotope number 3: 246Md
Neutrons: 145;
Jn: Unknown;
Decay: α > 0.00 %
ε > 0.00 %
SF;
t1/2: 1s ;

Mendelevium radioactive isotope number 4: 247Md
Neutrons: 146;
Jn: Unknown;
Decay: α ≤ 100.00 %;
t1/2: 1.12s ;

Mendelevium radioactive isotope number 5: 248Md
Neutrons: 147;
Jn: Unknown;
Decay: ε : 80.00 %
α : 20.00 %
SF ≤ 0.05 %;
t1/2: 7s ;

Mendelevium radioactive isotope number 6: 249Md
Neutrons: 148;
Jn: Unknown;
Decay: α > 60.00 %
ε ≤ 40.00 %;
t1/2: 24s ;

Mendelevium radioactive isotope number 7: 250Md
Neutrons: 149;
Jn: Unknown;
Decay: ε : 93.00 %
α : 7.00 %;
t1/2: 52s ;

Mendelevium radioactive isotope number 8: 251Md
Neutrons: 150;
Jn: Unknown;
Decay: ε ≥ 90.00 %
α ≤ 10.00 %;
t1/2: 240s ≈ 4.00 m;

Mendelevium radioactive isotope number 9: 252Md
Neutrons: 151;
Jn: Unknown;
Decay: ε ≤ 100.00 %;
t1/2: 138s ≈ 2.30 m;

Mendelevium radioactive isotope number 10: 253Md
Neutrons: 152;
Jn: 1/2-;
Decay: ε ≤ 100.00 %
α;
t1/2: 360s ≈ 6.00 m;

Mendelevium radioactive isotope number 11: 254Md
Neutrons: 153;
Jn: Unknown;
Decay: ε ≤ 100.00 %
ε ≤ 100.00 %;
t1/2: 1680s ≈ 28.00 m;

Mendelevium radioactive isotope number 12: 255Md
Neutrons: 154;
Jn: 7/2-;
Decay: ε : 92.00 %
α : 8.00 %
SF < 0.15 %;
t1/2: 1620s ≈ 27.00 m;

Mendelevium radioactive isotope number 13: 256Md
Neutrons: 155;
Jn: 1-;
Decay: ε : 90.80 %
α : 9.20 %
SF < 3.00 %;
t1/2: 4620s ≈ 1.28 h;

Mendelevium radioactive isotope number 14: 257Md
Neutrons: 156;
Jn: 7/2-;
Decay: ε : 85.00 %
α : 15.00 %
SF < 1.00 %;
t1/2: 19872s ≈ 5.52 h;

Mendelevium radioactive isotope number 15: 258Md
Neutrons: 157;
Jn: Unknown;
Decay: α : 100.00 %
SF;
t1/2: 4449600s ≈ 51.50 d;

Mendelevium radioactive isotope number 16: 258Md
Neutrons: 157;
Jn: Unknown;
Decay: ε ≥ 70.00 %
SF;
t1/2: 3420s ≈ 57.00 m;

Mendelevium radioactive isotope number 17: 259Md
Neutrons: 158;
Jn: Unknown;
Decay: SF ~ 100.00 %
α < 1.30 %;
t1/2: 5760s ≈ 1.60 h;

Mendelevium radioactive isotope number 18: 260Md
Neutrons: 159;
Jn: Unknown;
Decay: SF ≥ 42.00 %
α ≤ 25.00 %
ε ≤ 23.00 %
β - ≤ 10.00 %;
t1/2: 2747520s ≈ 31.80 d;

Mendelevium radioactive isotope number 19: 261Md
Neutrons: 160;
Jn: Unknown;
Decay: α ?;
t1/2: 2400s ≈ 40.00 m;

Mendelevium radioactive isotope number 20: 262Md
Neutrons: 161;
Jn: Unknown;
Decay: SF ?
α ?;
t1/2: 180s ≈ 3.00 m;

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