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Periodicity 2.1 - Coggle Diagram
Periodicity 2.1
Definitions
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First ionisation energy - amount of energy required to remove one mole of electron from one mole of atoms in its gaseous state
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Trends Across Periods
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Atomic Radius - Decrease
More protons in the nucleus - greater nuclear attraction - electrons held more tightly -- Same shells similar shielding
Positive ions (cations) - smaller than their atoms - Same number of protons attracting less amount of electrons
Negative ions (anions) - bigger than their atoms - same number of protons attracting more electrons - held less tightly
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