NEET2009ChemistryStructure of AtomActual
The energy absorbed by each molecule (A₂ ) of a substance is 4.4 10⁻¹⁹ ~J and bond energy per molecule is 4.0 10⁻¹⁹ ~J . The kinetic energy of the molecule per atom will be
Options
- A2.0 10⁻²⁰ ~J
- B2.2 10⁻¹⁹ ~J
- C2.0 10⁻¹⁹ ~J
- D4.0 10⁻²⁰ ~J
Correct answer
A. 2.0 10⁻²⁰ ~J
Step-by-step solution
K E of molecule = energy absorbed by molecule - BE per molecule aligned & = [ (4.4 10⁻¹⁹ )- (4.0 10⁻¹⁹ ) J . & =0.4 10⁻¹⁹ ~J & KE per atom = 0.4 10⁻¹⁹ 2 ~J =2.0 10⁻²⁰ ~J aligned