Protactinium, ID: C7440133 NIST 24032906362D 1 1.00000 0.00000 Copyright by the U.S. Sec. Commerce on behalf of U.S.A. All rights reserved. 1 0 0 0 0 1 V2000 0.0000 0.0000 0.0000 Pa 0 0 0 0 0 0 0 0 0 M END