1. Tardigrade
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  3. Chemistry
  4. Assertion: Electron affinity value of the 3 textrd period element is more than 2 textnd period element. Reason: Due to smaller size of the 2nd period, its electron density increases which eases the addition of electron.

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Q. Assertion : Electron affinity value of the $3\text{rd}$ period element is more than $2\text{nd}$ period element.
Reason : Due to smaller size of the 2nd period, its electron density increases which eases the addition of electron.

Classification of Elements and Periodicity in Properties

Solution:

I.E. of $3\text{rd}$ period is more than II this is due to the high electron density of $2\text{nd}$ period element which makes it difficult the addition of electron in its outermost shell.