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P-1 Periodic Classification of Element — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Periodic Classification of Element2 Marks
Question
Write the electronic configuration of first four elements in this group.
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Answer

ElementsElectronic configuration
Hydrogen1
Lithium2, 1
Sodium2, 8, 1
Potassium2, 8, 8, 1

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