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AleksAgata [21]
3 years ago
9

Which atom in the ground state has an outermost electron with the most energy?(1) Cs (3) Li(2) K (4) Na

Chemistry
1 answer:
Leokris [45]3 years ago
8 0
<span>The answer is Cs, no. 2.
Cesium (Cs) is an element which has an outermost electron with most energy in the ground state.</span> 
 Cesium (Cs), Lithium (Li), Potassium (K), and Sodium (Na) are elements which belong to the group 1 family, the alkali metals. Each has a valance of 1 and wants to release/ lose this e- (electron) to be isoelectronic with the nearest noble gas. Based on the periodic trends, an atom’s radii will raise going down a group.  


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