The energy of a hydrogen atom in the ground state is – 13.6 eV. The energy of a He⁺ ion

The Energy Of A Hydrogen Atom In The Ground State Physics QuestionThe Energy Of A Hydrogen Atom In The Ground State Physics Question

The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He⁺ ion in the first excited state will be

Options

(a) – 13.6 eV
(b) – 27.7 eV
(c) – 54.4 eV
(d) – 6.8 eV

Correct Answer:

– 13.6 eV

Explanation:

energy of a H-like atom in its nth state is given by
E = – Z² x 13.6 / n² eV
For, first excited state of He⁺, n= 2, Z= 2
Eₕₑ⁺ = – 4/2² x 13.6 = – 13.6 eV

AddThis Website Tools
admin:

Related Questions

  1. In a circuit, the current lags behind the voltage by a phase difference of π/2.
  2. Two bulbs 40 watt and 60 watt and rated voltage 240 V are connected in series
  3. The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source,
  4. A wire is suspended vertically from one of its ends is stretched by attaching a weight
  5. The charges Q, +q, and +q are placed at the vartices of an equilateral