Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 7 - Elements of Groups 16, 17 and 18 [Latest edition]

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Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 7 - Elements of Groups 16, 17 and 18 - Shaalaa.com
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Solutions for Chapter 7: Elements of Groups 16, 17 and 18

Below listed, you can find solutions for Chapter 7 of Maharashtra State Board Balbharati for Chemistry 12th Standard HSC for Maharashtra State Board.


Exercises
Exercises [Pages 163 - 164]

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board Chapter 7 Elements of Groups 16, 17 and 18 Exercises [Pages 163 - 164]

Exercises | Q 1.01 | Page 163

Select appropriate answers for the following.

Which of the following has highest electron gain enthalpy?

  • Fluorine

  • Chlorine

  • Bromine

  • Iodine

Exercises | Q 1.02 | Page 163

Select appropriate answers for the following.

Hydrides of group 16 are weakly acidic. The correct order of acidity is ______.

  • H2O > H2S > H2Se > H2Te

  • H2Te > H2O > H2S > H2Se

  • H2Te > H2Se > H2S > H2

  • H2Te > H2Se > H2O > H2

Exercises | Q 1.03 | Page 163

Select appropriate answers for the following.

Which of the following element does not show an oxidation state of +4?

  • O

  • S

  • Se

  • Te

Exercises | Q 1.04 | Page 163

Select appropriate answers for the following.

HI acid when heated with conc. H2SO4 forms _______.

  • HIO3

  • KIO3

  • I2

  • KI

Exercises | Q 1.05 | Page 163

Select appropriate answers for the following.

Ozone layer is depleted by _______.

  • NO

  • NO2

  • NO3

  • N2O5

Exercises | Q 1.06 | Page 163

Select appropriate answers for the following.

Which of the following occurs in a liquid state at room temperature?

  • HIO3

  • HBr

  • HCl

  • HF

Exercises | Q 1.07 | Page 163

Select appropriate answers for the following.

In pyrosulfuric acid oxidation state of sulfur is _______.

  • only +2

  • only +4

  • +2 and +6

  • only +6

Exercises | Q 1.08 | Page 163

Select appropriate answers for the following.

Stability of interhalogen compounds follows the order _______.

  • BrF > IBr > ICl > ClF > BrCl

  • IBr > BeF > ICl > ClF > BrCl

  • ClF > ICl > IBr > BrCl > BrF

  • ICl > ClF > BrCl > IBr > BrF

Exercises | Q 1.09 | Page 163

Select appropriate answers for the following.

BrCl reacts with water to form _______.

  • HBr

  • Br2 + Cl2

  • HOBr

  • HOBr + HCl

Exercises | Q 1.1 | Page 163

Select appropriate answers for the following.

Chlorine reacts with excess of fluorine to form _______.

  • CIF

  • CIF3

  • CIF2

  • Cl2F3 

Exercises | Q 1.11 | Page 163

In interhalogen compounds, which of the following halogens is never the central atom?

  • I

  • Cl

  • Br

  • F

Exercises | Q 1.12 | Page 163

Select appropriate answers for the following.

Which of the following has one lone pair of electrons?

  • IF3

  • ICl

  • IF5

  • ClF3

Exercises | Q 1.13 | Page 163

Select appropriate answers for the following.

In which of the following pairs, molecules are paired with their correct shapes?

  • [I3]: bent

  • BrF5 : trigonal bipyramidal

  • ClF3 : trigonal planar

  • [BrF4]- : square planar

Exercises | Q 1.14 | Page 163

Select appropriate answers for the following.

Among the known interhalogen compounds, the maximum number of atoms is _______.

  • 3

  • 6

  • 7

  • 8

Exercises | Q 2.01 | Page 163

Answer the following.

Write the order of the thermal stability of the hydrides of group 16 elements.

Exercises | Q 2.02 | Page 163

Answer the following.

What is the oxidation state of Te in TeO3?

Exercises | Q 2.03 | Page 163

Answer the following.

Name two gases which deplete ozone layer.

Exercises | Q 2.04 | Page 163

Answer the following.

Give two uses of ClO2.

Exercises | Q 2.05 | Page 163

Answer the following.

What is the action of bromine on magnesium metal?

Exercises | Q 2.06 | Page 163

Answer the following.

Write the names of allotropic forms of selenium.

Exercises | Q 2.07 | Page 163

Answer the following.

What is the oxidation state of ‘S’ in H2SO4?

Exercises | Q 2.08 | Page 163

Answer the following.

The pKa value of HCl is - 7.0 and that of HI is -10.0. Which is the stronger acid?

Exercises | Q 2.09 | Page 163

Answer the following.

Give one example showing reducing property of ozone.

Exercises | Q 2.1 | Page 164

Answer the following.

Write the reaction of conc. H2SO4 with sugar.

Exercises | Q 2.11 | Page 164

Write any two uses of Chlorine.

Exercises | Q 2.12 | Page 164

Complete the following.

ICl3 + H2O → _______ + _______ + ICl

Exercises | Q 2.12 | Page 164

Complete the following.

l2 + KClO3 → _______ + KIO3

Exercises | Q 2.12 | Page 164

Complete the following.

BrCl + H2O → _______ + HCl

Exercises | Q 2.12 | Page 164

Complete the following.

Cl2 + ClF3  → _______

Exercises | Q 2.12 | Page 164

Complete the following.

H2C = CH2 + ICl → _______

Exercises | Q 2.12 | Page 164

Complete the following.

2XeOF4 + SiO2 → _______ + SiF4

Exercises | Q 2.12 | Page 164

Complete the following.

XeF6 + H2O → _______ + 2HF

Exercises | Q 2.12 | Page 164

Complete the following.

XeOF4 + H2O → _______ + HF

Exercises | Q 2.13 | Page 164

Match the following:

A B
XeOF2 Xenon trioxydifluoride
XeO2F2 Xenon monooxydifluoride
XeO3F2 Xenon dioxytetrafluoride
XeO2F4 Xenon dioxydifluoride
Exercises | Q 2.14 | Page 164

What is the oxidation state of xenon in the following compounds?

XeOF4, XeO3, XeF6, XeF4, XeF2.

Exercises | Q 3.01 | Page 164

Answer the following.

The first ionization enthalpies of S, Cl, and Ar are 1000, 1256 and 1520 kJ/mol-1, respectively. Explain the observed trend.

Exercises | Q 3.02 | Page 164

Answer the following.

Acidic character of hydrides of group 16 elements increases from H2O to H2Te. Explain.

Exercises | Q 3.03 | Page 164

Answer the following.

How is dioxygen prepared in the laboratory from KClO3?

Exercises | Q 3.04 | Page 164

Answer the following.

What happens when lead sulfide reacts with ozone (O3)?

Exercises | Q 3.04 | Page 164

Answer the following.

What happens when nitric oxide reacts with ozone.

Exercises | Q 3.05 | Page 164

Answer the following.

Give two reactions showing the oxidising property of concentrated H2SO4.

Exercises | Q 3.06 | Page 164

Discuss the structure of sulfur dioxide.

Exercises | Q 3.07 | Page 164

Fluorine shows only –1 oxidation state while other halogens show –1, +1, +3, +5 and +7 oxidation states. Explain.

Exercises | Q 3.08 | Page 164

Answer the following.

What is the action of chlorine on Fe?

Exercises | Q 3.08 | Page 164

Answer the following.

What is the action of chlorine on Excess NH3.

Exercises | Q 3.09 | Page 164

Answer the following.

How is hydrogen chloride prepared from sodium chloride?

Exercises | Q 3.1 | Page 164

Answer the following.

Draw structures of XeF6

Exercises | Q 3.1 | Page 164

Answer the following.

Draw structures of XeO3

Exercises | Q 3.1 | Page 164

Answer the following.

Draw structures of XeOF4

Exercises | Q 3.1 | Page 164

Answer the following.

Draw structures of XeF2

Exercises | Q 3.11 | Page 164

Answer the following.

What are interhalogen compounds? Give two examples.

Exercises | Q 3.12 | Page 164

Answer the following.

What is the action of hydrochloric acid on NH3?

Exercises | Q 3.12 | Page 164

Answer the following.

What is the action of hydrochloric acid on Na2CO3?

Exercises | Q 3.13 | Page 164

Answer the following.

Give two uses of HCl.

Exercises | Q 3.14 | Page 164

Write the names and structural formulae of oxoacids of chlorine.

Exercises | Q 3.15 | Page 164

Answer the following.

What happens when Cl2 reacts with F2 in equal volume at 437 K.

Exercises | Q 3.15 | Page 164

Answer the following.

What happens when Br2 reacts with excess of F2.

Exercises | Q 3.16 | Page 164

Answer the following.

How are xenon fluorides XeF2, XeF4 and XeF6 obtained? Give suitable reactions.

Exercises | Q 3.17 | Page 164

Answer the following.

How are XeO3 and XeOF4 prepared?

Exercises | Q 3.18 | Page 164

Answer the following.

List the uses of Neon and argon gases.

Exercises | Q 3.19 | Page 164

Answer the following.

Describe the structure of the Ozone. Give two uses of ozone.

Exercises | Q 3.2 | Page 164

Explain the trend in following atomic properties of group 16 elements:

Atomic radii

Exercises | Q 3.2 | Page 164

Answer the following.

Explain the trend in following atomic properties of group 16 elements:

Ionisation enthalpy

Exercises | Q 3.2 | Page 164

Explain the trend in following atomic properties of group 16 elements:

Electronegativity

Exercises | Q 4.1 | Page 164

Answer the following.

Distinguish between rhombic sulfur and monoclinic sulfur.

Exercises | Q 4.2 | Page 164

Answer the following.

Give two reactions showing the oxidising property of concentrated H2SO4.

Exercises | Q 4.3 | Page 164

Answer the following.

How is SO2 prepared in the laboratory from sodium sulfite?

Exercises | Q 4.4 | Page 164

Describe the manufacturing of H2SO4 by the contact process.

Solutions for Chapter 7: Elements of Groups 16, 17 and 18

Exercises
Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 7 - Elements of Groups 16, 17 and 18 - Shaalaa.com

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 7 - Elements of Groups 16, 17 and 18

Shaalaa.com has the Maharashtra State Board Mathematics Chemistry 12th Standard HSC for Maharashtra State Board Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Balbharati solutions for Mathematics Chemistry 12th Standard HSC for Maharashtra State Board Maharashtra State Board 7 (Elements of Groups 16, 17 and 18) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Chemistry 12th Standard HSC for Maharashtra State Board chapter 7 Elements of Groups 16, 17 and 18 are Occurrence of Elements of Groups 16, 17 and 18, Electronic Configuration of Elements of Group 16, 17 and 18, Atomic and Physical Properties of Elements of Group 16, 17 and 18, Anomalous Behaviour of Oxygen, Anomalous Behaviour of Fluorine, Chemical Properties of Elements of Groups 16, 17 and 18, Oxoacids, Oxygen and Compounds of Oxygen, Chlorine, Concept of Group 18 Elements.

Using Balbharati Chemistry 12th Standard HSC for Maharashtra State Board solutions Elements of Groups 16, 17 and 18 exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Chemistry 12th Standard HSC for Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.

Get the free view of Chapter 7, Elements of Groups 16, 17 and 18 Chemistry 12th Standard HSC for Maharashtra State Board additional questions for Mathematics Chemistry 12th Standard HSC for Maharashtra State Board Maharashtra State Board, and you can use Shaalaa.com to keep it handy for your exam preparation.

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