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Q.

List top 5 electropositive elements

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Detailed Solution

The top five electropositive elements are francium, cesium, rubidium, potassium, and sodium.

Francium is extremely rare and radioactive, so in practice cesium is considered the most electropositive metal you can actually use. All five are alkali metals and show very strong tendency to lose one electron and form +1 ions.

RankElementGroupWhy highly electropositive
1Francium (Fr)1 (Alkali)Very large atomic radius, strong shielding; data limited due to radioactivity
2Cesium (Cs)1 (Alkali)Lowest ionization energy among usable metals; reacts violently with water
3Rubidium (Rb)1 (Alkali)Large size and low ionization energy
4Potassium (K)1 (Alkali)Loses one electron easily; forms K+
5Sodium (Na)1 (Alkali)Common, strongly electropositive; forms Na+

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