Question

The energy of the second Bohr orbit of the hydrogen atom is -328 kJ mol-1; hence the energy of the fourth Bohr orbit would be:

• A. - 41 kJ mol-1
• B. -1224 kJ mol-1
• C. -284 kJ mol-1
• D. -82 kJ mol-1

Answer 1

Answer: (D)

-82 kJ mol-1

Answer 2

En =−RH ($\frac{1}{2n}$)
As stated: E2 = 328 kJ/mol
E2 = RH ($\frac{1}{22}$) = 328 kJmol-1 and E4 = RH ($\frac{1}{22}$) ($\frac{1}{4}$) = 328 kJ/mol ($\frac{1}{4}$) = 82 kJ/mol