Question

Among S^2-, Cl^-, Ar, K⁺, Ca²⁺, Se^2-, Br^-, Kr, Rb⁺, and Sr²⁺, which one has the largest ionization energy?

Answer 1

Given data is,

Q) Among S^2-, Cl^-, Ar, K⁺, Ca²⁺, Se^2-, Br^-, Kr, Rb⁺, and Sr²⁺, which one has the largest ionization energy?

The answer is,

Actually the The atom with more negative charge has the smallest ionization energy.

S^2-, ion is the smallest ionization energy.

which one has the largest ionization energy

from below data is the highest ionization energy

Cs,Fr,Rb,K,Lr,Na,Ac,Ba,Ra,Li,Lu........

from question the Among S^2-, Cl^-, Ar, K⁺, Ca²⁺, Se^2-, Br^-, Kr, Rb⁺, and Sr²⁺,

All the species are isoelectronic and that species which has more negative charge will have largest radius. Thus Se2- will have largest radius (effective nuclear charge is minimum in Se2-)

Sr2+ have highest value of ionization this is because Sr2+ hase lost both of its valence electron and have stable electronic configuration
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