Time Left - 20:00 mins

Class XI Chemistry Atomic Structure 6

Attempt now to get your rank among 599 students!

Question 1

Consider the ground state of Cr atom (Z = 24). The number of electrons with the azimuthal quantum numbers l =1 and 2 are respectively

Question 2

For s-orbitals, since (ψ orbital wave function) is independent of angles, the probability density (ψ²) is -

Question 3

Heisenberg uncertainty principle states that -

Question 4

If threshold wavelength (λ⁰) for ejection of electron from metal is 330 nm, then work function for the photoelectric emission is -

Question 5

The frequency of one of the lines in Paschen series of a hydrogen atom is 2.34 × 10¹⁴Hz. The higher orbit, n₂, which produces this transitions is-

Question 6

Calculate the wavelength of the spectral line when the electron in the hydrogen atom undergoes a transition from fourth energy level to second energy level?

Question 7

The line spectra of two elements are not identical because -

Question 8

One energy difference between the states n = 2 and n = 3 is E eV, in hydrogen atom. The ionisation potential of H atom is -

Question 9

What is the change in the orbit radius when the electron in the hydrogen atom (Bohr model) undergoes the first Paschen transition?

Question 10

The set of quantum numbers not applicable for an electron in an atom is -

Question 11

The ionisation energy of the hydrogen atom is 13.6 eV. If hydrogen atoms in the ground state absorb quanta of energy 12.75 eV, how many discrete spectral lines will be emitted as per Bohr’s theory?

Question 12

Wave function vs distance from nucleus graph of an orbital is given below:

The number of nodal sphere of this orbital is

599 attempts
7 upvotes
13 comments

Tags :

Apr 27JEE & BITSAT