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Structure of Atom — BITSAT Chemistry PYQs

27 previous year questions from Structure of Atom with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

Structure of Atom — BITSAT Chemistry PYQs

The degeneracy of hydrogen atom that has energy equal to -R_ H 9 is (where, R_ H = Rydberg constant)

If the de-broglie wavelength of a particle of mass (m) is 100 times its velocity. Then, its value in terms of its mass (m) and plank constant (h) is

The energy of second orbit of hydrogen atom is -5.45 10⁻¹⁹ ~J . What is the energy of first orbit of Li ²⁺ ion (in J ) ?

A photon of wavelength 3000 Ã… strikes a metal surface. The work function of the metal is 2.13 eV. What is the kinetic energy of the emitted photoelectron? ( h =6.626 10⁻³⁴ Js )

A stream of electrons from a heated filament was passed between two charged plates kept at a potential difference V volt. If 'e' and m are charge and mass of an electron, respectiv

Observe the given boundary surface diagrams of two orbitals I and II and choose the correct option.

If the radius of the 3 rd Bohr's orbit of hydrogen atom is r₃ and the radius of 4^ th Bohr's orbit is r₄ . Then:

The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530 Å . The radius for the first excited state (n=2) orbit is (in Å )

The probability density plots of 1 s and 2 s orbitals are given in figure. The density of dots in a region represents the probability density of finding electrons in the region. On

The frequency of radiation emitted when the electron falls from n =4 to n =1 in a hydrogen atom will be (Given : ionization energy of H =2.18 10⁻¹⁸ ~J atom ⁻¹ and h =6.625 10⁻³⁴ Js

The difference in the number of unpaired electrons of a metal ion in its high-spin and low-spin octahedral complexes is two. The metal ion is:

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 10³ ~ms ⁻¹ . (Mass of proton =1.67 10⁻²⁷ ~kg and . h =6.63 10⁻³⁴ Js )

What is the maximum wavelength line in the Lyman series of He ⁺ ion?

The wavelength corresponding to maximum energy for hydrogen is 91 . 2 nm . The corresponding wavelength for He + ion is

In a homonuclear molecule, which of the following set of orbitals is degenerated?

If the photon of wavelength 150 pm strikes an atom and one of its inner bound electron is ejected out with a velocity of 1 . 5 &#215; 10 7 m / s , what is the energy with which it

If 0 . 53 &#215; 10 - 10 4 metre is the radius of smallest electron orbit in hydrogen like atom, then the atom is

In an atom, an electron is moving with a speed of 600 m / s with an accuracy of 0 . 005 % . Certainty with which the position of the electron can be located is ( h = 6 . 6 &#215; 1

The orbital angular momentum of an electron is 2 s orbital is

Which of the following is an incorrect set of quantum members?

The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at

An e ⁻ has magnetic quantum number as -3, what is its principal quantum number?

The wave number of the limiting line in Lyman series of hydrogen is 109678 ~cm ⁻¹ . The wave number of the limiting line in Balmer series of He ⁺ would be :

The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530 Ã . The radius for the first excited state (n=2) orbit is ( in Ã)

If the radius of H is 0.53 Ã… , then what will be the radius of ₃ Li ²⁺ ?

Which of the following exhibit only+ 3 oxidation state?

Chloride ion and potassium ion are isoelectronic. Then :

If the photon of wavelength 150 pm strikes an atom and one of its inner bound electron is ejected out with a velocity of 1 . 5 × 10 7 m / s , what is the energy with which it

If 0 . 53 × 10 - 10 4 metre is the radius of smallest electron orbit in hydrogen like atom, then the atom is

In an atom, an electron is moving with a speed of 600 m / s with an accuracy of 0 . 005 % . Certainty with which the position of the electron can be located is ( h = 6 . 6 × 1