Question

Which one of the following relations is incorrect for Bohr model of hydrogen or hydrogen like species (where symbols have their usual meaning)?​

Answer 1

Answer:

A) According to the Bohr's atomic theory, the kinetic energy of an electron is directly proportional to the square of the atomic number and inversely proportional to the square of the principal quantum number.

(B) The product of the velocity of electron and the principal quantum number is proportional to Z.

(C) Frequency of revolution of the electron in an orbit is directly proportional to the square of the atomic number and inversely proportional to the cube of the principal quantum number.

(D) Coulombic force of attraction on the electron is directly proportional to the square of the atomic number and inversely proportional to the fourth power of the principal quantum number.

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Answer 2

Incorrect statement is The product of velocity of electron and the principal quantum number is proportional to atomic number Z.

Explanation:

Neil Bohr proposed Bohr's atomic model.

1. The Kinetic energy of an electron is directly proportional to the square of atomic number. Kinetic energy is inversely proportional to the principal quantum number.(n). This statement is correct
2. The product of the velocity of electron and the principal quantum number is proportional to atomic number Z.This statement is incorrect.
3. The Frequency of an electron is directly proportional to the cube of principal quantum number.This is a correct statement.
4. Coloumbic force of attraction is directly proportional to the square of atomic number and is inversely proportional to the principal quantum number.