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| Ion | No. of levels |
|---|
| Yb I | 250 |
| Yb II | 349 |
| Yb III | 55 |
| Yb IV | 121 |
| Yb V | 2 |
| Yb VI | 2 |
| Yb VII | 2 |
| Yb VIII | 2 |
| Yb IX | 2 |
| Yb X | 2 |
| Yb XI | 2 |
| Yb XII | 2 |
| Yb XIII | 2 |
| Yb XIV | 2 |
| Yb XV | 2 |
| Yb XVI | 2 |
| Yb XVII | 2 |
| Yb XVIII | 2 |
| Yb XIX | 2 |
| Yb XX | 2 |
| Yb XXI | 2 |
| Yb XXII | 2 |
| Yb XXIII | 2 |
| Yb XXIV | 2 |
| Yb XXV | 2 |
| Yb XXVI | 2 |
| Yb XXVII | 2 |
| Yb XXVIII | 2 |
| Yb XXIX | 2 |
| Yb XXX | 2 |
| Yb XXXI | 2 |
| Yb XXXII | 2 |
| Yb XXXIII | 2 |
| Yb XXXIV | 2 |
| Yb XXXV | 2 |
| Yb XXXVI | 2 |
| Yb XXXVII | 2 |
| Yb XXXVIII | 2 |
| Yb XXXIX | 2 |
| Yb XL | 2 |
| Yb XLI | 2 |
| Yb XLII | 2 |
| Yb XLIII | 2 |
| Yb XLIV | 2 |
| Yb XLV | 2 |
| Yb XLVI | 2 |
| Yb XLVII | 2 |
| Yb XLVIII | 2 |
| Yb XLIX | 2 |
| Yb L | 2 |
| Yb LI | 2 |
| Yb LII | 2 |
| Yb LIII | 2 |
| Yb LIV | 2 |
| Yb LV | 2 |
| Yb LVI | 2 |
| Yb LVII | 2 |
| Yb LVIII | 2 |
| Yb LIX | 2 |
| Yb LX | 2 |
| Yb LXI | 2 |
| Yb LXII | 2 |
| Yb LXIII | 2 |
| Yb LXIV | 2 |
| Yb LXV | 2 |
| Yb LXVI | 2 |
| Yb LXVII | 2 |
| Yb LXVIII | 20 |
| Yb LXIX | 39 |
| Yb LXX | 10 |
| Total for Yb: | 970 |