NCERT Solutions for class 11 Chemistry Chapter 2 Structure of Atom

NCERT Solutions for class 11 Chemistry Chapter 2 Structure of Atom are provided in the article. Some of the important topic cover under Structure of atom chapter includes:

Expected no.of questions: 3 to 6 questions of total 9 marks

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 2 PDF

NCERT Solutions for Class 11 Chemistry Chapter 2

NCERT Solutions for class 11 Chemistry Chapter 2 Structure of Atom PDF is given below.

Class 11 Chemistry Chapter 2 Structure of Atom – Important Topics

Atom consists of three subatomic particle – Protons, Neutrons and Electrons.

Protons: These are positively charged particles which are present in the nucleus.
Neutrons: These are neutral particles which are present in the nucleus.
Electrons: These are negatively charged particles which revolve around the nucleus.

Atomic Number of an element is the number of electrons or protons in the atom. The elements in the periodic table are arranged according to the atomic numbers.

Mass Number of an element is the total mass of the nucleon (protons+neutrons) present in an atom. Since electrons are very light, their mass is negligible.

Some of the important atomic models are:

Thomson’s Model
Rutherford Model
Neils Bohr Model

Electrons are filled in orbitals revolving around the nucleon. From lower to higher energy levels, shells are always filled in a step-by-step manner. Electrons aren't filled in following shell until shells before it have been filled.

Electrons in the outermost shell are called valence electrons. These determine the affinity of an element to combine with other elements.

Related links for Class 11 Chemistry Chapter 2 Articles:

Discovery of Electron	Charge of mass ratio of electron	Isotopes and isobars
Wavenature of electromagnetic radiation	Photoelectric effect	Emission and Absorption spectra
Limitations of Bohr atomic model	Quantum mechanical model of an atom	Energy of orbitals

Chemistry Related Articles:

NCERT Solutions for Class 11 Chemistry	Important Chemistry Formulas	Chemistry Study Material
Difference between Articles in Chemistry	Important Named Reactions	Chemistry Notes

CBSE CLASS XII Related Questions

1.
(i) Why do Zr and Hf exhibit similar properties ?
(ii) "\( E^\circ \) for \( \mathrm{Mn^{3+}/Mn^{2+}} \) couple is more positive than that for \( \mathrm{Fe^{3+}/Fe^{2+}} \)." Justify the statement.
[Atomic number : Mn = 25, Fe = 26]

View Solution

2.
Consider the decomposition of hydrogen peroxide \( (\mathrm{H_2O_2}) \) as per the equation given below : \[ 2\mathrm{H_2O_2} \xrightarrow[\text{Alkaline medium}]{I^-} 2\mathrm{H_2O} + \mathrm{O_2} \] The mechanism for this reaction was found to be : Step I : \( \mathrm{H_2O_2} + I^- \longrightarrow \mathrm{H_2O} + IO^- \) (slow) Step II : \( \mathrm{H_2O_2} + IO^- \longrightarrow \mathrm{H_2O} + I^- + \mathrm{O_2} \) (fast) (a) Write the rate law expression. (b) Determine the order of reaction with respect to \( \mathrm{H_2O_2} \), \( I^- \) and overall order of reaction. (c) What is the molecularity of the reaction in Step II ?

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3.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

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4.
From the given data of \(E^{\circ}\) values, answer the following questions :
(I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
(II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
(III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?

View Solution

5.
Conductivity of \( 2.5 \times 10^{-4} \) M methanoic acid solution is \( 5.25 \times 10^{-5} \) S cm\(^{-1}\).
(a) Calculate its molar conductivity.
(b) Calculate its degree of dissociation.
[Given : \( \lambda^{\circ}_{(\mathrm{H^+})} = 349.5 \) S cm\(^2\) mol\(^{-1}\) and \( \lambda^{\circ}_{(\mathrm{HCOO^-})} = 50.5 \) S cm\(^2\) mol\(^{-1}\)]

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6.
Draw the structure of 'X' in the following reaction:

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NCERT Solutions for class 11 Chemistry Chapter 2: Structure of Atom

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 2 PDF

NCERT Solutions for Class 11 Chemistry Chapter 2

Class 11 Chemistry Chapter 2 Structure of Atom – Important Topics

CBSE CLASS XII Related Questions

1.
(i) Why do Zr and Hf exhibit similar properties ?
(ii) "\( E^\circ \) for \( \mathrm{Mn^{3+}/Mn^{2+}} \) couple is more positive than that for \( \mathrm{Fe^{3+}/Fe^{2+}} \)." Justify the statement.
[Atomic number : Mn = 25, Fe = 26]

3.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

4.
From the given data of \(E^{\circ}\) values, answer the following questions :
(I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
(II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
(III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?

6.
Draw the structure of 'X' in the following reaction:

Similar Chemistry Concepts

Comments

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NCERT Solutions for class 11 Chemistry Chapter 2: Structure of Atom

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 2 PDF

NCERT Solutions for Class 11 Chemistry Chapter 2

Class 11 Chemistry Chapter 2 Structure of Atom – Important Topics

CBSE CLASS XII Related Questions

1.(i) Why do Zr and Hf exhibit similar properties ?(ii) "\( E^\circ \) for \( \mathrm{Mn^{3+}/Mn^{2+}} \) couple is more positive than that for \( \mathrm{Fe^{3+}/Fe^{2+}} \)." Justify the statement.[Atomic number : Mn = 25, Fe = 26]

3.(a) Write two structural differences between DNA and RNA.(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

4.From the given data of \(E^{\circ}\) values, answer the following questions : (I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ? (II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ? (III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?

6.Draw the structure of 'X' in the following reaction:

Similar Chemistry Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
(i) Why do Zr and Hf exhibit similar properties ?
(ii) "\( E^\circ \) for \( \mathrm{Mn^{3+}/Mn^{2+}} \) couple is more positive than that for \( \mathrm{Fe^{3+}/Fe^{2+}} \)." Justify the statement.
[Atomic number : Mn = 25, Fe = 26]

3.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

4.
From the given data of \(E^{\circ}\) values, answer the following questions :
(I) Why \(E^{\circ}_{M^{2+}/M}\) show irregular trend in the above values ?
(II) Why is \(E^{\circ}_{Cu^{2+}/Cu}\) value exceptionally positive ?
(III) Why \(E^{\circ}_{Mn^{2+}/Mn}\) value is highly negative ?

6.
Draw the structure of 'X' in the following reaction: