Homework Answers
Size of a cation is always smaller than the parent atom and size of the anion is larger than the parent atom.
Here, from the periodic table, the atoms corresponding to the respective colours are,
Blue = Rubidium
Green = Strontium
Orange = Ytterbium
Rubidium, Strontium and Ytterbium form stable cations. Therefore, the size of the resulting ions will be smaller than the parent atom
Red = Tellurium
Black = Iodine
Tellurium and Iodine form stable anions. Therefore, the size of the resulting ions will be larger than the parent atom
Answer
Blue, Green and Orange = Smaller than the parent atom
Black and Red = Larger than the parent atom
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