Actinoid

Actinide series me uu 15 chemical elements hae jon ki periodic table me actinium aur lawrencium ke biich me hae. Iske atomic numbers  89 - 103 hae. Actinide series ke naam actinium se aais hae. Ii sab element radioactive hae.

 The actinide elements 
 Atomic Number Naam Chinh 89   Actinium    Ac 90   Thorium    Th 91   Protactinium    Pa 92   Uranium    U 93   Neptunium    Np 94   Plutonium    Pu 95   Americium    Am 96   Curium    Cm 97   Berkelium    Bk 98   Californium    Cf 99   Einsteinium    Es 100   Fermium    Fm 101   Mendelevium    Md 102   Nobelium    No 103   Lawrencium    Lr