With increase in the value of Principal Quantum Number (n), the shape of the s-orbitals remains the same although their sizes:
Correct answer: B. Increase
- A. Decrease
- B. Increase
- C. Remain the same
- D. May or may not remain the same
Explanation
As the principal quantum number (n) increases, the size of the s-orbitals also increases. The shape of the s-orbitals remains spherical, with a probability distribution that becomes more spread out from the nucleus as n increases. So, while the shape (spherical) remains the same, the size of the orbital increases with higher values of n ( as shown in figure). This means that s-orbitals with larger principal quantum numbers have a higher probability of finding electrons farther away from the nucleus. Therefore, option B is correct.
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