For an electron moving in orbit of ion, the product of uncertainty in position and momentum can't be

Question

For an electron moving in  orbit of  ion, the product of uncertainty in position and momentum can't be

Canvas Classes · Accepted Answer

Step 1: Heisenberg's Uncertainty Principle

The product  must be greater than or equal to .

Step 2: Evaluate each option

- (a)  — This equals the minimum value → allowed (equality case). ✓
- (b)  — Greater than  → allowed. ✓
- (c)  — Greater than  → allowed. ✓
- (d)  — Less than  (since ) → violates HUP → NOT possible. ✗

Final Answer:  → Option (d)

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