Question

Given below are two statements :

Statement I : Bohr's theory accounts for the stability and the line spectrum of $L{i}^{+}$ ion.

Statement II : Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic field.
In the light of the above statements. choose the most appropriate answer from the options given below.

• A. Both statement I and statement II are true
• B. Statement I is false but statement II is true
• C. Both statement I and statement II are false
• D. Statement I is true but statement II is false

Answer 1

The correct option is B Statement I is false but statement II is true

Bohr's theory is applicable for unielectronic species only.
It is not applicable to multi electronic sytems like $L{i}^{+}$ which has two electrons
Bohr's theory could not explain the splitting of spectral lines in the presence of external magnetic field (Zeeman effect)
Statement I - false
Statement II - true
Correct option is (b).