MCQOPTIONS
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| 1. |
If in nature there may not be an element for which the principal quantum number n > 4, then the total possible number of elements will be [IIT 1983; MP PET 1999; RPMT 1999; RPET 2001] |
| A. | 60 |
| B. | 32 |
| C. | 4 |
| D. | 64 |
| Answer» B. 32 | |