
# Define the constants
mu = 0.9994557
m = 9.109383 * 10**-31
e = 1.6021766 * 10**-19
h = 6.626070 * 10**-34
epsilon0 = 8.8541878 * 10**-12
Z = 1
n = 1

# Calculate the energy
E = -mu*m*(e**4) / (8*(h**2)*(epsilon0**2)) * (Z**2 / n**2)

# Convert the energy to eV
E *= 1 / e

print(E)
