To jump from cesium (Cs, atomic number 55) to hafnium (Hf, atomic number 72), you can look at the periodic table for intermediary elements. The element with an atomic number directly after cesium is barium (Ba, atomic number 56). After barium, the sequence would continue through the elements:
- Barium (Ba, 56)
- Lanthanum (La, 57)
- Cerium (Ce, 58)
- Praseodymium (Pr, 59)
- Neodymium (Nd, 60)
- Promethium (Pm, 61)
- Samarium (Sm, 62)
- Europium (Eu, 63)
- Gadolinium (Gd, 64)
- Terbium (Tb, 65)
- Dysprosium (Dy, 66)
- Holmium (Ho, 67)
- Erbium (Er, 68)
- Thulium (Tm, 69)
- Ytterbium (Yb, 70)
- Lutetium (Lu, 71)
Then you arrive at hafnium (Hf, 72).
If you only wish to list the element that directly follows cesium in this context, it happens to be barium, not a single jump directly to hafnium. Therefore, you can view the steps sequentially through these elements.
If you mean how to express this "space" mathematically or in a code form (like in a game or puzzle), you might refer to the one-step or one space "jump" as jumping from 55 to 72 directly, or sequentially moving through the elements as a series of steps (55 to 56, 56 to 57...71 to 72).
However, please clarify what do you mean by "a space" or what context you are asking in case you are looking for a different type of explanation.
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