atomic structure 0.0 / 5 ? Chemistryatomic structureASAQA Created by: MollyBCreated on: 28-10-18 13:54 427935168 Across 1. the weighted average mass of an atoms of an element, taking into account its naturally occurring isotopes, relative to 1/12 the relative mass of an atom of carbon-12. (8, 6, 4) 7. sub-atomic particle found within the nucleus and has no charge (7) 8. sub-atomic particle found within the nucleus and has a positive charge (6) Down 2. a region of space around an atomic nucleus where there is a high probability of finding an electron (6, 7) 3. the total number of protons plus neutrons in the nucleus (4, 6) 4. the energy required to remove a mole of electrons from a mole of atoms in the gaseous state (10, 6) 5. atom of an element with the same number of protons but a different number of neutrons (7) 6. sub-atomic particle found in shells surrounding the nucleus and has a negative charge (8) 9. the number of protons in the nucleus (6, 6)
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