Question
- How does Ionic radii vary with effective nuclear charge? Give example.
- An element belongs to 3rd period and group-13 of the periodic table. Identify the element and write two properties of element.
✓
Answer
- Ionic radii decreases as effective nuclear charge increases e.g. Mg2+ is smaller than Na+ because Mg2+ has 12 protons which attract 10 electrons more strongly than 1 electrons attract 10 electrons in Na+.
- Inverse proportion to the effective nuclear charge.
- Direct proportion to the screening effect.
- It is aluminum, good conductor of electricity, solid and metallic.
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