EASY

JEE Main

IMPORTANT

Earn 100

Given below are two statements:

Statement I : Bohr's theory accounts for the stability and line spectrum of ${Li}^{+}$ ion.

Statement II : Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic field.

In the light of the above statements, choose the most appropriate answer from the options given below:

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Important Questions on Structure of Atom

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main 18 March 2021 Shift 1>Q 2

A certain orbital has no angular nodes and two radial nodes. The orbital is:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main 17 March 2021 Shift 1>Q 3

A certain orbital has

n = 4

and

m_{l} = - 3 .

The number of radial nodes in this orbital is _______. (Round off to the Nearest Integer).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main 16 March 2021 Shift 2>Q 4

The number of orbitals with

n = 5, m_{1} = + 2

is ________. (Round off to the Nearest Integer).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main 16 March 2021 Shift 2>Q 5

{[Ti {(H_{2} O)}_{6}]}^{3 +}

absorbs light of wavelength

498 nm

during a

d - d

transition. The octahedral splitting energy for the above complex is _______

\times 10^{- 19} J

. (Round off to the Nearest Integer).

h = 6.626 \times 10^{- 34} Js; c = 3 \times 10^{8} {ms}^{- 1}

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main 16 March 2021 Shift 1>Q 6

When light of wavelength $248 nm$ falls on a metal of threshold energy $3.0 eV$ , the de-Broglie wavelength of emitted electrons is ________ $Å$ . (Round off to the Nearest Integer).

[Use : $\sqrt{3} = 1.73, h = 6.63 \times 10^{- 34} Js; m_{e} = 9.1 \times 10^{- 31} kg; c = 3.0 \times 10^{8} {ms}^{- 1}; 1 eV = 1.6 \times 10^{- 19} J]$

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th January 2020 Shift 1>Q 7

The de Broglie wavelength of an electron in the

4^{t h}

Bohr's orbit of hydrogen is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th January 2019 Shift 2>Q 8

Which of the following combination of statements is true regarding the interpretation of the atomic orbitals?

(A)

An electron in an orbital of high angular momentum stays away from the nucleus than an electron in the orbital of lower angular momentum.

(B)

For a given value of the principal quantum number, the size of the orbit is inversely proportional to the azimuthal quantum number.

(C)

According to wave mechanics, the ground state angular momentum is equal to

\frac{h}{2 π}

(D)

The plot of

ψ

r

for various azimuthal quantum numbers, shows peak shifting towards higher

r

value.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th January 2019 Shift 1>Q 9

For emission line of atomic hydrogen from

n_{i} = 8

n_{f} = n,

the plot of wave number

(\bar{v})

against

(\frac{1}{n^{2}})

will be: (The Rydberg constant,

R_{H}

is in wave number unit)

Important Questions on Structure of Atom

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