×

Protactinium
Protactinium

Niobium
Niobium



ADD
Compare
X
Protactinium
X
Niobium

Protactinium and Niobium Periodic Table

Periodic Table

Symbol

Pa
Nb

Group Number

35
0 17
👆🏻

Period Number

75
2 7
👆🏻

Block

f block
d block

Element Family

Actinide
Transition Metal

CAS Number

74401337440031
7429905 54386242
👆🏻

Space Group Name

I4/mmm
Im_ 3m

Space Group Number

139.00229.00
11 276
👆🏻