Is Protactinium a Metal, Nonmetal or Metalloid?
Protactinium (Pa) is a metal (an actinide) — an actinide — a radioactive f-block metal of period 7. It sits in the f-block, period 7, and is a solid at room temperature.
This is the fast lane: one page, one fact, zero digressions. Read the quick answer, check the table, and if your exam needs the full derivation, the sections below walk through it step by step — in Bangla and English, like every page here. Need the whole picture instead — history, characteristics, uses, exam questions? The full Protactinium page is one click away.
The one-line answer, with reasons
Protactinium is a metal (an actinide). Chemists decide by behaviour, not appearance: metals (like Protactinium) give up electrons, shine when freshly cut, and conduct heat and electricity; nonmetals take or share electrons and (as solids) break rather than bend. Protactinium checks every metal box — placed in the actinide family of the table.
Protactinium's metal/nonmetal report card
| Property | Value | Typical of |
|---|---|---|
| Category | Actinide | — |
| Phase at room temp | solid | metals are usually solid |
| Block | f-block | — |
| Group | f-block | — |
| Period | 7 | — |
The family it belongs to
The whole actinide family shares one seating area of the table, and every member's family ID card is one click away — compare Protactinium with its upstairs or downstairs neighbour and the family pattern jumps out.
Students also ask
Is Protactinium a good conductor of electricity?
Yes — like other metals, Protactinium conducts electricity and heat well, thanks to its sea of free electrons.
Can a gas be a metal — like Protactinium?
Yes — being a metal or nonmetal is about bonding and electron behaviour, not state. At room temperature Protactinium is a solid, and that says nothing against its metallic character.