Atomic Structure Questions
Number of possible spectral lines in the brackett series in hydrogen spectrum, when electrons present in the ninth excited state return to the ground state, is
Total number of electrons present in Cr24 and Cu29 having quantum number l = 2 and m = 0
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The characteristics of cathode rays do not depend upon the nature of material of electrodes. Reason R: Cathode rays consist of positive
Splitting of spectral lines under the influence of electric field is known as;
Which of the following statements correctly describes the Bohr model of the atom?
The radius of first Bohr's orbit for hydrogen is 0.53 Å. The radius of third Bohr's orbit would be
If the uncertainty in velocity and position are same, then the uncertainty in momentum would be:
Match List I with List II. List I List II (A) Rydberg constant (I) 6.626 × 10⁻³⁴ Js (B) Planck’s constant (II) 3 × 10⁸ ms⁻¹ (C) Velocity of light (III) 9.1 × 10⁻³¹ kg (D) Mass of electron (IV) 109, 677 cm⁻¹ Choose the correct answer from the options