Decay properties of neutron-deficient isotopes 256, 257Db, 255Rf, 252, 253Lr

𨧀的同位素

𨧀的同位素.

Isotopes of mendelevium

Mendelevium (101Md) is a synthetic element, and thus a standard atomic weight cannot be given.

铋-209

铋-209（209Bi）是铋的同位素之一，具有極微弱的放射性，半衰期長達1.9×1019年. 是鉍最穩定的同位素，也是所有發生α衰變的放射性同位素中已知半衰期最長的. 它有83個質子和126個中子，原子質量爲208.9803987原子質量單位.

रदरफोर्डियम

रदरफोर्डियम एक रासायनिक तत्व है। इसका अर्धायु काल ~१.३ घंटे का होता है।.

Bismuth-209

Bismuth-209 (209Bi) is an isotope of bismuth; with the longest known half-life of any radioisotope that undergoes α-decay (alpha decay).

Rutherfordi

رادرفوردیم

A raderfordium izotópjai

Lawrencio

鑪

Isotopes of dubnium

Dubnium (Db) is an artificial element, and thus a standard atomic mass cannot be given.

Isotopes of rutherfordium

Rutherfordium (Rf) is an artificial element, and thus a standard atomic mass cannot be given.

Rutherfordium

Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford.