We wish to see inside an atom. Assuming the atom to have a diameter of `100` pm, this means that one must be able to resolve a width of say `10` pm. If an electron microscope is used, the minimum electron energy required is about

Options

A. 5 KeV
B. 15 keV
C. 150 keV
D. 1.5MeV

Explanation

To find the minimum electron energy required to resolve a width of 10 picometers (pm) using an electron microscope, we can follow these steps:

### Step-by-Step Solution

1. **Understanding the Problem**:
We need to resolve a width of 10 pm, which is equivalent to \(10 \times 10^{-12}\) meters or \(10^{-11}\) meters. The resolving power of an electron microscope is determined by the wavelength of the electrons used.

2. **Using the Formula for Wavelength**:
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