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Rb
Atoms of alkaline metals: Rb, Cs, Fr, K, Na, Li. They have a low ionization potential. This potential is expressed in kJ/mol - molar ionization energy and is different for the first, second, third...n electron.
chlorine
Li+ , Na+ , K+ , Rb+ , Cs+ , Fr+
the order of reducing capacities is: Na<K-Rb<Cs<Li
Rb
Lithium has the least number of protons, rubidium has the most number of protons.
Rb has the least
It is the energy required to remove the 1st electron from the atom
Low
Rb
Francium has the lowest 1st ionization energy. It badly wants to lose that electron. It is extremely energetically favorable. Basically the elements that are in group 1 and are in the lowest periods.
Rb has lower electronegativity (0.8) where as Na is 0.9
Atoms of alkaline metals: Rb, Cs, Fr, K, Na, Li. They have a low ionization potential. This potential is expressed in kJ/mol - molar ionization energy and is different for the first, second, third...n electron.
A+ Na
Hydrogen and the group 1 alkali metals Li, Na, K, Rb, Cs
Rb is the largest, Li the smallest in the row above. Group 1 of the periodic table: Fr > Cs > Rb > K > Na > Li > H