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Assertion (A): The first ionisation ener...

Assertion (A): The first ionisation energy of B is less than that of Be
Assertion (R): The penetration ability of s-electron is higher than that of p-electrons the correct answer is

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(A): The first ionisation energy of B is less than that of Be (R) : The penetration ability of s- electrons is higher than that of p- electrons The correct answer is

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