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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements3 Marks
Question
Name two properties of elements whose magnitudes change when going from top to bottom in a group of the periodic table. In what manner do they change?
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Answer

On going down in a group of the periodic table, the atomic size and metallic character increases. When we move down from top to bottom in group 1 of alkali metals, the size of atoms increases gradually from lithium to francium. In group 1 of alkali metals, lithium is the least metallic element whereas francium is the most metallic element.

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