Input interpretation
![protactinium | atomic radius](../image_source/e13403a448f1d4780f2c954a8861247a.png)
protactinium | atomic radius
Result
![180 pm (picometers)](../image_source/004ffa7312bc285d17ef44952a43c8ad.png)
180 pm (picometers)
Periodic table location
![Periodic table location](../image_source/6eeb11a654e078c747222c524c874245.png)
Periodic table location
Atomic radii properties
![atomic radius (empirical) | 180 pm covalent radius | 200 pm](../image_source/5e2a03b8191833a475623bd662402168.png)
atomic radius (empirical) | 180 pm covalent radius | 200 pm
Units
Unit conversions
![0.18 nm (nanometers)](../image_source/954fa2be3985906642724f4b4a54aea5.png)
0.18 nm (nanometers)
![1.8×10^-10 meters](../image_source/16703f31d3bc0aaaa54d4c1e49e1ee69.png)
1.8×10^-10 meters
![7.09×10^-9 inches](../image_source/af71fd3e4441d15edeb5c33a3c6d68e5.png)
7.09×10^-9 inches
![1.8 Å (ångströms)](../image_source/6b53f640daea8044f8f5c03eb7543c69.png)
1.8 Å (ångströms)
Comparisons as atomic radius
![≈ 5.8 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )](../image_source/4901af4461edecde93673b38e1f1a330.png)
≈ 5.8 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
![≈ 7.2 × atomic radius of hydrogen ( ≈ 25 pm )](../image_source/4092fb15a2811daea879c5ef380add47.png)
≈ 7.2 × atomic radius of hydrogen ( ≈ 25 pm )