1.

The ionisation energy of 10 times ionised sodium atom is [DPMT 1991]

A.   13.6 eV        
B.   \[13.6\times 11\ eV\]
C.   \[\frac{13.6}{11}eV\]        
D.   \[13.6\times {{(11)}^{2}}eV\]
Answer» E.


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