Ionic and Atomic Radii

Ionic (pm)

N- 146 (N3-)
 P- 212 (P3-)
 As- --
 Sb- 76 (Sb3+)
 Bi- 103 (Bi3+)

Atomic (pm)

N- 65 pm
P- 100 pm
As- 115 pm
Sb- 145 pm
Bi- 160 pm
*Note- The atomic radii increases from nitrogen to bismuth.