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Why cation is smaller than its …

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Why cation is smaller than its parent atom??. Guys this question came in my exam and i have written the answer that -------- when atom loses electrons, its sheilding or screening effect ( electron - electron repulsion) reduces due to which the size of cation is smaller than its parent atom . Please tell me that my answer is correct or not ????

Posted by Prakhar Jadaun ? 6 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Priya Dharshini ? 6 years, 11 months ago

Ur answer is correct infact. Few teachers are like that only they try to cut students marks for silly reasons to show that they are strict in checking. Dont worry.... do good in next exam

Priya Dharshini ? 6 years, 11 months ago

this is because they have lesser electrons, while their nuclear charge remains the same. The remaining electrons are, therefore held more tightly by the protons in the nucleus and thus their radii.are smaller than the parent atoms andParent atom has more electrons so the effective nuclear charge on each electron is less. Now when a cation is formed electron(s) is/are lost. So the effective nuclear charge or simply put, the attraction of the nucleus towards the electrons increases. So due to greater pull, the nucleus pulls the shells towards it.. there by reducing the size.

Prakhar Jadaun ? 6 years, 11 months ago

The reasons my chemistry teacher told is that i have not written the important points ?

Christin Mathew 6 years, 11 months ago

Correct

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