EduRev

Home
Explore Courses
Pricing Plans
Partner Courses
Change Class/Exams
Doubts
My Analysis
Switch to Infinity
View Analysis
Create Your Own Test
Raise a Demand
Ask a doubt
Report this question

EduRev

All Courses

Get the App Signup / Login

NEET > Chemistry Class 11 > Practice Questions: Structure of Atom

Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

1 Crore+ students have signed up on EduRev. Have you?

Question for Practice Questions: Structure of Atom

Try yourself:Isotopes contain

A.
same number of neutrons
B.
same number of protons
C.
same mass number
D.
same number of electrons

Explanation

Isotopes contain the same number of protons.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The number of angular nodes in an orbital of hydrogen-like species is

A.
n
B.
l
C.
n – l
D.
n + l

Explanation

The number of angular node is equal to the value of l (azimuthal quantum number).

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following orbitals is not permitted in an atom?

A.
n = 2, l = 0, m = 0
B.
n = 2, l = 1, m = 0
C.
n = 2, l = 0, m = 1
D.
n = 3, l = 2, m = 1

Explanation

The value of m cannot be greater than the value of l.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:In the absence of electric and magnetic fields which of the following orbitals of multi-electron atom will have the
same energy?
(i) n = 2, l = 1, m = 0
(ii) n = 3, l = 1, m = 1
(iii) n = 4, l = 0, m = 0
(iv) n = 3, l = 1, m = 0

A.
(i) and (ii)
B.
(i) and (iii)
C.
(ii) and (iii)
D.
(ii) and (iv)

Explanation

Orbitals having the same value of n + l will have the same energy irrespective of the value of m.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The other orbitals filled in ₄₇Ag is

A.
3d
B.
4d
C.
5d
D.
6d

Explanation

The outer filled orbital in ₄₇Ag is 4d. Its electronic configuration is [Kr](4d)¹⁰(5s)1.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following spectral series of hydrogen atom lies in the ultraviolet region of electromagnetic radiation?

A.
Lyman
B.
Balmer
C.
Paschen
D.
Brackett

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The splitting of spectral lines of hydrogen atom in the presence of magnetic field is known as

A.
Stark effect
B.
Zeeman effect
C.
Bohr effect
D.
Anti-Zeeman effect

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The shape of an orbital is governed by the

A.
principal quantum number
B.
azimuthal quantum number
C.
magnetic quantum number
D.
spin quantum number

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:How many unpaired electrons are present in Ni2+ (Z = 28)?

A.
0
B.
2
C.
4
D.
8

Explanation

The electronic configuration of ₂₈Ni²⁺ (electron = 26) is (1s)²(2s)²(2p)⁶(3s)²(3p)⁶(3d)⁸.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The energy of an orbital in a multielectron atom depends on the

A.
principal quantum number only
B.
principal and azimuthal quantum numbers only
C.
principal, azimuthal and magnetic quantum numbers
D.
principal, azimuthal, magnetic and spin quantum numbers

Explanation

The energy of a single electron species such as H, He⁺, and Li²⁺ depends only on the principal quantum number whereas for a multielectron species, it depends on the principal as well as azimuthal quantum number.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:A d_{x2 – y2} orbital has

A.
no nodal plane
B.
one nodal plane in the xy plane
C.
two nodal planes in the xz and yz planes
D.
two nodal planes at angles 45° to x and y axes.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following statements on the atomic wave function ψ is not correct?

A.
ψ may be a real valued wave function
B.
ψ may be in some cases be a complex function
C.
ψ has a mathematical significance only
D.
ψ is proportional to the probability of finding an electron

Explanation

It is ψ² and not ψ is proportional to the probability of finding an electron.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The binding energy of electrons in a metal is 193 kJ mol^–1. The threshold frequency of the metal is

A.
4.83 x 10¹⁰ Hz
B.
4.83 x 10¹² Hz
C.
4.83 x 10¹⁴ Hz
D.
4.83 x 10¹⁶ Hz

Explanation

Binding energy of electron per atom of the metal

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The outer electronic configuration of cerium (Z = 58) is

A.
(4d)¹⁰ (5s)² (5p)⁶ (4f)³ (6s)¹
B.
(5d)¹⁰ (5s)² (5p)⁶ (5d)¹ (6s)²
C.
(4d)¹⁰ (5s)² (5p)⁶ (5d)³ (6s)²
D.
(4d)¹⁰ (5s)² (5p)⁶ (4f)² (5d)⁰ (6s)²

Explanation

The expected outer electronic configuration of ₅₈Ce is (4f)¹(5d)¹(6s)². But due to very similar energies of 4f and 5d orbitals in all the lanthanides excepting Gd (4f⁷5d¹6s²) and ₇₁Lu (4f¹⁴, 5d¹, 6s²), (5d)1 electron is shifted to (4f) orbital and hence 5d orbital remains unoccupied. Thus, the observed configuration of₅₈Ce is (4f)²(5d)⁰(6s)².

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:If the radius of Bohr’s first orbit of H atom is r, then the radius of Bohr’s first orbit of Li²⁺ ion will be

A.
3r
B.
r/3
C.
9r
D.
r/9

Explanation

The expression of radius is
Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET
where K is constant.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following electronic transitions in the line spectrum of He⁺ will have the same wavelength as that

A.
4 ← 2
B.
2 ← 1
C.
3 ← 1
D.
4 ← 1

Explanation

First line in the Lyman series of hydrogen atom corresponds to
Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET
For He⁺, the spectral line occurs at

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The ionization energy of one mole of hydrogen atoms is about

A.
1313 J
B.
1313 kJ
C.
1616 J
D.
1616 kJ

Explanation

IE = N_AR_∞ hc = (6.022 x 10²³ mol^–1) (1.09678 x 10⁷ m^–1) (6.626 x 10^–34 J s) (3 x 10⁸ m s^–1)
= 1.313 x 10⁶ J mol^–1 = 1313 kJ mol^–1

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following statements is not true?

A.
Lyman spectral series of hydrogen atom lies in the ultraviolet region of electromagnetic radiation
B.
Balmer spectral series of hydrogen atom lies in the visible region of electromagnetic radiation
C.
Paschen spectral series of hydrogen atom lies in the visible region of electromagnetic radiation
D.
Brackett spectral series of hydrogen atom lies in the infrared region of electromagnetic radiation

Explanation

Paschen spectral series lies in the near infrared region of electromagnetic radiation.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The ionization energy of a hydrogen atom in the ground state is 2.17 x 10^–11 erg. The ionization energy of Li²⁺ in the ground state will be

A.
1.953 x 10^–15 J
B.
1.953 x 10^–16 J
C.
1.953 x 10^–17 J
D.
1.953 x 10^–18 J

Explanation

E_Li = Z²EH = (3²) (2.17 x 10^–11 erg) = 1.953 x 10^–10 erg = 1.953 x 10^–17 J

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Naturally occurring copper is assigned atomic mass equal to 63.546 u. If it consists of two isotopes ⁶³Cu (atomic mass = 62.930 u) and ⁶⁵Cu (atomic mass = 64.928 u), then mass percentage of isotope 65Cu in the naturally occurring copper is

A.
30.83
B.
41.15
C.
56.2
D.
59.1

Explanation

We have
63.546 u = x (62.930 u) + (1 – x) (64.928 u)
Hence
Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET
Mass percent of ⁶⁵Cu = 0.31 x 100 = 31%

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:In Bohr theory of He⁺, the energy difference between two successive energy levels

A.
increases with increase in the value of n
B.
decreases with increase in the value of n
C.
remains constant with increase in the value of n
D.
initially increases followed by a decrease with increase in the value of n

Explanation

The expression of energy is
Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

For n = 1 ΔE = 3K/4 = 0.75 K
n = 2 ΔE = 5K/36 = 0.14 K
n = 3 ΔE = 7K/144 = 0.049 K

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:If θ is the angle made by orbital angular momentum with the z-axis, then the quantum number l and m of an atom are related to each other through the expression

A.
m = l cos θ
B.
m ={l(l + 1)} cos θ
C.
l = m cos θ
D.

Explanation

Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET
L_z = m(h/2π) and L_z = L cos θ. Hence,

Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:The angular dependence of an orbital is decided by the

A.
principal quantum number only
B.
azimuthal quantum number only
C.
magnetic quantum number only
D.
both azimuthal and magnetic quantum numbers

Explanation

The terms within the brackets represents angular dependence.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Which of the following symbols correctly represents an orbitals in an atom?

Explanation

The function R depends on the quantum numbers n and l, the function Θ depends on l and | m | and the function Ф depends on m.

View Solution

Question for Practice Questions: Structure of Atom

Try yourself:Hydrogen atom in its ground state is excited by a radiation of wavelength 97.26 nm. The longest wavelength it emits is

A.
1250 nm
B.
1400 nm
C.
1875 nm
D.
2050 nm

Explanation

Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

The transition n₂ = 4 → n₁ = 3 will emit the longest wavelength. Hence

Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

= 1.875 x 10^–6 m = 1875 nm

View Solution

The document Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET is a part of the NEET Course Chemistry Class 11.

All you need of NEET at this link: NEET

	Chemistry Class 11 204 videos\|331 docs\|229 tests

Chemistry Class 11

204 videos|331 docs|229 tests

Join Course

Up next

	Index: Structure of Atom
	Test: Sub-atomic Particles
	Test: Atomic Models

Top Courses for NEET

Biology Class 11

Topic-wise MCQ Tests for NEET

NEET Mock Test Series

NCERTs at Fingertips: Textbooks, Tests & Solutions

Biology Class 12

About this Document

	184 Views
	4.66/5 Rating
	Mohit Rajpoot

Document Description: Practice Questions: Structure of Atom for NEET 2023 is part of Chemistry Class 11 preparation. The notes and questions for Practice Questions: Structure of Atom have been prepared according to the NEET exam syllabus. Information about Practice Questions: Structure of Atom covers topics like and Practice Questions: Structure of Atom Example, for NEET 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Practice Questions: Structure of Atom.

Introduction of Practice Questions: Structure of Atom in English is available as part of our Chemistry Class 11 for NEET & Practice Questions: Structure of Atom in Hindi for Chemistry Class 11 course. Download more important topics related with notes, lectures and mock test series for NEET Exam by signing up for free. NEET: Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET

Description

Full syllabus notes, lecture & questions for Practice Questions: Structure of Atom - Notes | Study Chemistry Class 11 - NEET - NEET | Plus excerises question with solution to help you revise complete syllabus for Chemistry Class 11 | Best notes, free PDF download

Information about Practice Questions: Structure of Atom

In this doc you can find the meaning of Practice Questions: Structure of Atom defined & explained in the simplest way possible. Besides explaining types of Practice Questions: Structure of Atom theory, EduRev gives you an ample number of questions to practice Practice Questions: Structure of Atom tests, examples and also practice NEET tests