The number of correct statements from the following is

A. For 1s orbital, the probability density is maximum at the nucleus.
B. For 2s orbital, the probability density first increases to maximum and

Question

The number of correct statements from the following is

A. For 1s orbital, the probability density is maximum at the nucleus.
B. For 2s orbital, the probability density first increases to maximum and then decreases sharply to zero.
C. Boundary surface diagrams of the orbitals enclose a region of 100% probability of finding the .
D. p and d orbitals have 1 and 2 angular nodes respectively.
E. Probability density of the p-orbital is zero at the nucleus.

Canvas Classes · Accepted Answer

Evaluating each statement:

A ✓ — For 1s orbital, , which is maximum at  (the nucleus). The probability density (not probability) is indeed maximum at the nucleus for 1s. ✅

B ✗ — For 2s orbital, the radial probability density  starts at zero (at nucleus), increases to a maximum, drops to zero at the radial node, then rises to a second maximum, and finally decreases to zero. The description "increases to maximum then decreases sharply to zero" is incomplete/incorrect — it has two maxima. ✗

C ✗

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