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Statement-1 : Nitrogen and oxygen have n...

Statement-1 : Nitrogen and oxygen have nearly same size.
Statement-2 : Electron-electron repulsions tend to increase the size.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the given statements, we will evaluate each statement step by step. ### Step 1: Evaluate Statement-1 **Statement-1**: Nitrogen and oxygen have nearly the same size. - **Analysis**: - Nitrogen (N) has an atomic number of 7, while oxygen (O) has an atomic number of 8. - Both elements are in the same period (2nd period) of the periodic table. - As we move from left to right across a period, the atomic size generally decreases due to the increase in nuclear charge, which pulls the electrons closer to the nucleus. - Therefore, the atomic radius of nitrogen is larger than that of oxygen. **Conclusion for Statement-1**: This statement is incorrect. ### Step 2: Evaluate Statement-2 **Statement-2**: Electron-electron repulsions tend to increase the size. - **Analysis**: - Electron-electron repulsion occurs when electrons repel each other due to their negative charge. - In general, as we move down a group in the periodic table, the number of electron shells increases, which leads to an increase in atomic size. - However, if we consider the effect of electron-electron repulsion, an increase in repulsion would imply that the electrons are pushing away from each other, which could potentially increase the size of the atom. - Yet, when the atomic size increases (as in larger atoms), the effect of electron-electron repulsion is not significant enough to counteract the overall increase in size due to additional shells. - Thus, while electron-electron repulsion does exist, it does not necessarily lead to an increase in atomic size in the context of periodic trends. **Conclusion for Statement-2**: This statement is also incorrect. ### Final Conclusion Both Statement-1 and Statement-2 are incorrect. ---
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Knowledge Check

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