MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistrys- Block 3.0Previous Year Questions
Among the alkali metals, cesium is the most reactive because (RPMT 2010)
A.its incomplete shell is nearest to the nucleus
B.it has a single electron in the valence shell.
C.it is the heaviest alkali metal
D.the outermost electron is more loosely bound than✓ Correct
Explanation
Cesium is the most reactive metal in the alkali metal. Because the outermost electron is more loosely bound than the outermost electrons of the other alkali metals and the trend of reactivity increases down the group as required ionization energy decreases.
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