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QJEEAdv19Cha61c: JEE Advanced 2019 Chemistry - Class 11 JEEAdv19Cha61c Solution: Consider the Bohr's model of a one-electron atom where the…

Consider the Bohr's model of a one-electron atom where the electron moves around the nucleus. In the following List-I contains some quantities for the nth orbit of the atom and List-II contains options showing how they depend on n.

JEE Advanced 2019 Paper 2 Offline Chemistry - Structure of Atom Question 8 English
Which of the following options has the correct combination considering List-I and List-II?

Multiple Choice Options

  • A (II), (R)
  • B (I), (P)
  • C (I), (T)
  • D (II), (Q)

Step-by-Step Verified Solution

(I) Radius of the nth orbit, r = 0.529×n2Z0.529 \times {{{n^2}} \over Z}

Here, r∝n2r \propto {n^2}

From List-II, correct match is (I, T)

(II) Angular momentum of the electron, mvr=nh2πmvr = {{nh} \over {2\pi }} or mvr∝nmvr \propto n

From List - II, correct match (II, S)

Hence, correct matching from List-I and List-II on the basis of given options is (I, T).

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