The ionization potential of mercury is 10.39 V. How far an electron must travel in an electric field of 
to gain sufficient energy to ionise mercury?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The potential which is required to ionize the electron from outermost shell of mercury is called ionization potential. The electric field strength is given by 
.
where, d is distance between plates creating electric field.
Given, 
Distance travelled by electron to gain ionization energy,
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