Statement 1: Two electrons in the $2 s$ subshell must have opposite spins.
Statement 2: The Pauli Exclusion Principle states that no two electrons in the same atom can have identical quantum numbers.

Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

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Both the Statement 1 and Statement 2 are correct, but Statement 2 is not the correct explanation of Statement 1.

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Statement 1 is correct, but Statement 2 is not correct.

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Statement 1 is not correct, but Statement 2 is correct.

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Solution

The correct option is B Both the Statement 1 and Statement 2 are correct, but Statement 2 is not the correct explanation of Statement 1.
The statement $1$ is a true statement as electrons belonging to same sub shell have opposite spins. Statement $2$ is also true as it states Pauli's exclusion principle. Thus both statement are true but second one does not explains first one.

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Statement 1: Two electrons in the 2s subshell must have opposite spins.Statement 2: The Pauli Exclusion Principle states that no two electrons in the same atom can have identical quantum numbers.

Statement 1: Two electrons in the $2 s$ subshell must have opposite spins.
Statement 2: The Pauli Exclusion Principle states that no two electrons in the same atom can have identical quantum numbers.