A sodium atom is in one of the states labeled 'Lowest excited levels'. – McqOptions

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1.	A sodium atom is in one of the states labeled 'Lowest excited levels'. It remains in that state for an average time of 10?8 sec, before it makes a transition back to a ground state. What is the uncertainty in energy of that excited state
A.	6.56 ´ 10?8 eV
B.	2 ´ 10?8 eV
C.	10?8 eV
D.	8 ´ 10?8 eV
Answer» B. 2 ´ 10?8 eV

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