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

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JEE Main

IMPORTANT

Earn 100

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 $ψ$ Vs $r$ for various azimuthal quantum numbers, shows peak shifting towards higher $r$ value.

50% studentsanswered this correctly

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 - 9th January 2019 Shift 1>Q 9

For emission line of atomic hydrogen from

n_{i} = 8

to

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)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th April 2019 Shift 2>Q 10

Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is represented by

a_{0}

).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th April 2019 Shift 1>Q 11

For any given series of spectral lines of atomic hydrogen, let $Δ \bar{v} = {\bar{v}}_{m a x} - {\bar{v}}_{m i n}$ be the difference in maximum and minimum wave number in $c m^{- 1}$ .

The ratio $Δ {\bar{v}}_{L y m a n} / Δ {\bar{v}}_{B a l m a r}$ is

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th April 2017>Q 12

The electron in the hydrogen atom undergoes transition from higher orbitals to orbital of radius

211.6 pm

. This transition is associated with

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th April 2016>Q 13

The total number of orbitals associated with the principal quantum number

5

is:

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 9th April 2014>Q 14

The energy of an electron in first Bohr's orbit of H atom is

- 13.6 eV .

The energy value of electron in the first excited state of

{Li}^{2+}

is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 8th January 2020 Shift 2>Q 15

Hydrogen has three isotopes

(A), (B)

and

(C) .

If the number of neutron(s) in

(A), (B)

and

(C)

respectively, are

(x), (y)

and

(z),

the sum of

(x), (y)

and

(z)

is

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 2 - Structure of Atom>JEE Main - 8th January 2020 Shift 2>Q 16

The radius of the second Bohr orbit, in terms of the Bohr radius,

a_{0},

in

{Li}^{2 +}

is: