Explain why cations are smaller and anions larger in radii than their parent atoms?
Nucleus of an atom is positively charged and electrons are revolving around the nucleus in their respective orbitals.The more the cations or anions comes closer to the nucleus ,lesser will be their atomic radii. Therefore in the case of cations and anions are as follows:
A cation is a positively charged species that has a fewer number of electrons than its parent atom, while its nuclear charge remains the same. As a result, the attraction of electrons to the nucleus is more in a cation than in its parent atom. Therefore, a cation is smaller in size than its parent atom.
On the other hand, an anion is a positively charged species that has one or more electrons than its parent atom, resulting in an increased repulsion among the electrons and a decrease in the effective nuclear charge. As a result, the distance between the valence electrons and the nucleus is more in anions than in its parent atom. Hence, an anion is larger in radius than its parent atom.
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Welcome to the NCERT Solutions for Class 11 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 13: Explain why cations are smaller and anions larger in radii than their parent atoms?....
Comments
How can the cation & anion both have positively charged
How can bth anion nd cation be positively charged
well explanation
You should be more informative
Great ans
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Anions are negatively charged while cations are positively charged.there is a typing mistake
How can bth anion nd cation be positively chargedð
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