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MediumWhat is the name of the enthalpy change for the reaction O+(g) → O2+(g) + e- (for element O, proton number 8)?
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Basic level
Chemistry Learning
Work through every topic, one step at a time.
Atomic Structure
What atoms are made of and how their electrons behave.
Subatomic particles
Behaviour in an electric field
Nuclide notation and isotopes
Nucleus and nuclear reactions
Electron shells, subshells and orbitals
Rules for electronic configurations
Ground and excited states
Electronic configuration of ions
Isoelectronic species and the Periodic Table
Electrostatic effects and shielding
Atomic radius
Ionic radius
Ionisation energies
Electronegativity
Deflection angle calculations
Electronic configuration of ions — forward
Electronic configuration of ions — reverse
Electronic configuration — forward (Z=1-30)
Electronic configuration — reverse (config to element)
Ion neutron and electron counts
Ionisation energy equations
Isotope neutron counts
Nuclear decay equations
Successive ionisation energy — group deduction
Electric field: direction of deflection
Electric field: which deflects more
Isotope recognition
Electron shell and subshell energy comparisons
Atomic radius comparisons
Ionic radius comparisons
First ionisation energy comparisons
Electronegativity comparisons
Isoelectronic species recognition
Periodic table classification
Additional application questions
Atomic radius — pairwise comparisons
Electronegativity — pairwise comparisons
First ionisation energy — pairwise comparisons
Ion configuration reasoning
Ion deflection comparisons
Isoelectronic ionic radius comparisons
Successive ionisation energies — reverse reasoning
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