Anions have larger size than parent atom
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Anions have larger size than parent atom because as they gain more electron,but the number protons in the nucleas remains same.
Let's take an example of Oxygen. It's atomic number is 8, hence the electronic configuration will be 2,6. It means that it will gaon 2 electrons and form O^2- anion. But the number of protons is the same, i.e, 8. Previously, 8 electrons were attracted by 8 protons. But now, 10 electrons are attracted by 8 protons, which means that there will be less attraction and the size will get bigger.
Therefore, the size of the anion is bigger than the parent atom.
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Let's take an example of Oxygen. It's atomic number is 8, hence the electronic configuration will be 2,6. It means that it will gaon 2 electrons and form O^2- anion. But the number of protons is the same, i.e, 8. Previously, 8 electrons were attracted by 8 protons. But now, 10 electrons are attracted by 8 protons, which means that there will be less attraction and the size will get bigger.
Therefore, the size of the anion is bigger than the parent atom.
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Cations are small in size because they are formed by loss of electrons and anions are larger in size because they are formed by the gain of electrons. cation than in its parent atom . Therefore, a cation is smaller in size than its parent atom
When electrons are added to form anion,the increased electron-electron repulsions cause the electrons to spread out more in space.no of protons remain same Thus, anions are larger than their parent atoms
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When electrons are added to form anion,the increased electron-electron repulsions cause the electrons to spread out more in space.no of protons remain same Thus, anions are larger than their parent atoms
hope u like it .
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