Hydrogen s and p block elements Keyword cards 3.0 / 5 based on 2 ratings ? ChemistryUniversityNone Created by: AnthonyCreated on: 24-01-13 13:25 7624315 Across 1. The smallest repeating unit in a crystal structure. (4, 4) 4. The energy required to remove an electron from an atom in the gaseous phase. (10, 6) 5. Elements which form structures containing sequences of elements. (10) 6. Elements or compounds that exist in different crystal forms which contain identical repeating units. (12) 7. The energy given out when an electron is added to an atom in the gas phase (8, 8) Down 2. The enthalpy change when one mole of a solid ionic lattice is formed into it usual lattice structure from its consituent gaseous phase. (7, 8) 3. Elements exist in different structural forms. The chemical bonding is different in between the atoms (9) 7. The power of an atom to attract electrons to itself in a molecule. (17)
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