| Element |
References Discovery Identification |
Configuration | Term | J | E(cm-1) | g | |
| ThIVo | (49.4) | (49.4) | 6p6(1S).5f | 2F | 5/2 | 0.00 | 0.80? |
| ThIVo | (49.4) | (49.4) | 6p6(1S).5f | 2F | 7/2 | 4 325.33 | |
| ThIVo | (36.1) | (36.1) | 6p6(1S).7p | 2P | 1/2 | 60 239.10 | 0.666 |
| ThIVo | (36.1) | (36.1) | 6p6(1S).7p | 2P | 3/2 | 73 055.90 | |
| ThIVo | (36.1) | (unp.13) | 6p6(1S).6f | 2F | 5/2 | 127 269.2 | |
| ThIVo | (36.1) | (unp.13) | 6p6(1S).6f | 2F | 7/2 | 127 815.3 | |
| ThIVo | (49.4) | (49.4) | 6p6(1S).8p | 2P | 1/2 | 134 516.50 | 0.66 |
| ThIVo | (49.4) | (49.4) | 6p6(1S).8p | 2P | 3/2 | 139 870.90 | 1.33 |
| ThIVo | (88.8) | (88.8) | 6p6(1S).7f | 2F | 5/2 | 164 554.7 | |
| ThIVo | (88.8) | (88.8) | 6p6(1S).7f | 2F | 7/2 | 165 059.0 | |