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| Ion | No. of levels |
|---|
| Hf I | 333 |
| Hf II | 125 |
| Hf III | 2 |
| Hf IV | 2 |
| Hf V | 2 |
| Hf VI | 2 |
| Hf VII | 2 |
| Hf VIII | 2 |
| Hf IX | 2 |
| Hf X | 2 |
| Hf XI | 2 |
| Hf XII | 2 |
| Hf XIII | 2 |
| Hf XIV | 2 |
| Hf XV | 2 |
| Hf XVI | 2 |
| Hf XVII | 2 |
| Hf XVIII | 2 |
| Hf XIX | 2 |
| Hf XX | 2 |
| Hf XXI | 2 |
| Hf XXII | 2 |
| Hf XXIII | 2 |
| Hf XXIV | 2 |
| Hf XXV | 2 |
| Hf XXVI | 2 |
| Hf XXVII | 2 |
| Hf XXVIII | 2 |
| Hf XXIX | 2 |
| Hf XXX | 2 |
| Hf XXXI | 2 |
| Hf XXXII | 2 |
| Hf XXXIII | 2 |
| Hf XXXIV | 2 |
| Hf XXXV | 2 |
| Hf XXXVI | 2 |
| Hf XXXVII | 2 |
| Hf XXXVIII | 2 |
| Hf XXXIX | 2 |
| Hf XL | 2 |
| Hf XLI | 2 |
| Hf XLII | 2 |
| Hf XLIII | 2 |
| Hf XLIV | 2 |
| Hf XLV | 2 |
| Hf XLVI | 2 |
| Hf XLVII | 2 |
| Hf XLVIII | 2 |
| Hf XLIX | 2 |
| Hf L | 2 |
| Hf LI | 2 |
| Hf LII | 2 |
| Hf LIII | 2 |
| Hf LIV | 2 |
| Hf LV | 2 |
| Hf LVI | 2 |
| Hf LVII | 2 |
| Hf LVIII | 2 |
| Hf LIX | 2 |
| Hf LX | 2 |
| Hf LXI | 2 |
| Hf LXII | 2 |
| Hf LXIII | 2 |
| Hf LXIV | 2 |
| Hf LXV | 2 |
| Hf LXVI | 2 |
| Hf LXVII | 2 |
| Hf LXVIII | 2 |
| Hf LXIX | 2 |
| Hf LXX | 20 |
| Hf LXXI | 39 |
| Hf LXXII | 10 |
| Total for Hf: | 661 |