Protactinium
Protactinium ek chemical element hae, jiske chemical symbol Pa, atomic number 91 aur aomic mass 231.04 hae . Periodic table me ii uu chemical elements ke group me hae jiske Actinoids bolaa jaae hae.
| Atomic Structure | |
|---|---|
| Symbol | Pa |
| Atomic Number | 91 |
| Atomic Mass | 231.04g/mol |
| Periodic Table | |
| Group | 3 |
| Row / Period | 7 |
| Element Category | Transition dhaatu |
| Chhapa | |
 | |
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