Periodic Properties and Variations of Properties - Physical and Chemical — Concept Maps
ICSE · Class 10 · Chemistry
4 concept maps of Periodic Properties and Variations of Properties - Physical and Chemical for ICSE Class 10 Chemistry, each also written out as a text.
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See them allCorrect vs Incorrect Thinking: Periodic Trends in a Period
The map in words
- Moving LEFT to RIGHT in a Period
- What changes?
- Nuclear Charge INCREASES
- Stronger pull on electrons
- WRONG belief: More electrons = Bigger atom
- CORRECT: Stronger pull = Smaller atom
- Atomic Size DECREASES
- Ionisation Energy INCREASES
- Electron Affinity INCREASES
- Electronegativity INCREASES
- Metallic Character DECREASES
- Non-metallic Character INCREASES
- Stronger pull on electrons
- Number of Shells - SAME
- Electrons added to SAME shell
- Nuclear Charge INCREASES
- What changes?
Periodic Properties — Complete Overview
The map in words
- Periodic Properties
- Atomic Size
- Definition
- Distance from nucleus to outermost shell
- Units
- Angstrom or picometres
- Trend in Period
- Decreases left to right
- Trend in Group
- Increases top to bottom
- Definition
- Ionisation Energy
- Definition
- Min energy to remove valence electron
- Units
- kJ per mol
- Trend in Period
- Increases left to right
- Trend in Group
- Decreases top to bottom
- Exceptions
- IE of B less than IE of Be
- IE of O less than IE of N
- Definition
- Electron Affinity
- Definition
- Energy released on electron addition
- Trend in Period
- Increases left to right
- Trend in Group
- Decreases top to bottom
- Exception
- EA of Cl greater than EA of F
- Definition
- Electronegativity
- Definition
- Tendency to attract shared electrons
- Scale
- Pauling scale
- Trend in Period
- Increases left to right
- Trend in Group
- Decreases top to bottom
- Most electronegative
- Fluorine value 4 point 0
- Definition
- Metallic Character
- Definition
- Tendency to lose valence electrons
- Trend in Period
- Decreases left to right
- Trend in Group
- Increases top to bottom
- Definition
- Non Metallic Character
- Definition
- Tendency to gain electrons
- Trend in Period
- Increases left to right
- Trend in Group
- Decreases top to bottom
- Definition
- Atomic Size
Periodic Properties — Complete Overview
The map in words
- Periodic Properties
- Atomic Size
- Increases down group
- Decreases across period
- Unit - pm or Angstrom
- Ionisation Energy
- Decreases down group
- Increases across period
- Exception - B less than Be
- Exception - O less than N
- Unit - kJ per mol
- Electron Affinity
- Decreases down group
- Increases across period
- Exception - Cl greater than F
- Second EA is endothermic
- Unit - kJ per mol
- Electronegativity
- Decreases down group
- Increases across period
- F is most electronegative
- No units - dimensionless
- Metallic Character
- Increases down group
- Decreases across period
- Atom loses electrons
- Related to low IE
- Non-Metallic Character
- Decreases down group
- Increases across period
- Atom gains electrons
- Related to high EA
- Atomic Size
Periodic properties arise because elements show recurring patterns in electronic configuration when arranged by increasing atomic number
The map in words
- Periodic properties arise because elements show recurring patterns in electronic configuration when arranged by increasing atomic number
- Modern periodic law
- Mendeleev's periodic law
- Periodicity
- Classification of elements
- Atomic size
- Ionisation energy
- Electron affinity
- Electronegativity
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