Tag: p- block elements-ii

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Questions Related to p- block elements-ii

Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

Match the column I with column II and mark the appropriate choice.

Column I Column II
(A) $H _{2}SO _{4}$ (i) Highest electron gain enthalpy
(B) $CCl _{3}NO _{2}$ (ii)Chalcogen
(C) $Cl _{2}$ (iii) Tear gas
(D) Sulphur (iv) Storage batteries
  1. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (i), (D) $\rightarrow$ (ii)
  2. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (i), (D) $\rightarrow$ (ii)
  3. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (i), (C) $\rightarrow$ (ii), (D) $\rightarrow$ (iii)
  4. (A) $\rightarrow$ (ii), (B) $\rightarrow$ (i), (C) $\rightarrow$ (iii), (D) $\rightarrow$ (iv)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$H _2SO _4$ is used in storage batteries.

$CCl _3NO _2$ is chloropicrrin which is known as tear gas.
$Cl$ is the element of highest electron gain enthalpy.
Sulfur is the element belongs to 16th group which are also called as Chalcogens.
So the given data matches with option A.
Hence option A is correct.

Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

Less ionic compound among the following

  1. NaF

  2. KCl

  3. KF

  4. NaCl
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

According to Fajan's rules, larger cations and smaller anions favor covalent character, while smaller cations and larger anions favor ionic character. Sodium chloride (NaCl) has a smaller anion compared to fluorides, making it relatively less ionic among the given alkali halides.

Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

$  { I } _{ 2 }C{ l } _{  6}$ i s formed by the following reaction:


       $  2IC{ l } _{  3}\rightleftharpoons {I  } _{2  }C{l } _{ 6 }  $

On the basis of the structure of $  {I } _{2  }C{l } _{ 6 }  $, find the number of atoms lying in one plane.

  1. 4

  2. 6

  3. 8

  4. 10
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

I2Cl6 exists as a dimer of ICl3. The structure is planar with two bridging chlorine atoms and two iodine atoms, where all six atoms (two iodine and four chlorine atoms) lie in the same plane.

Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

In NaOX , X cannot be

  1. ${ F } _{ 2 }$
  2. ${ Cl } _{ 2 }$
  3. ${ Br } _{ 2 }$
  4. $I _{ 2 }$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In NaOX, X represents a halogen. While NaOF, NaClO, and NaBrO are known compounds, NaOI is extremely unstable and does not exist in standard conditions because iodine is not electronegative enough to form a stable hypohalite ion in this context.

Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

The table shows some information about elements in Group VII of the Periodic Table. 

Name State at room temperature Colour
Chlorine Gas yellow-green
Bromine liquid brown
iodine ? ?
Astaine solid black

Which information about iodine completes the table?

  1. State - liquid, colour - black

  2. State - liquid, colour - green

  3. State - solid, colour - grey

  4. State - solid, colour - yellow
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
$\text{D) State-solid,Colour-yellow}$
$\text{Iodine is solid at room temperature and appears yellow in low concentrat}$
Multiple choice chemistry p- block elements-ii group 17 elements - general properties group 17 elements group 17 elements - properties

Which requires the highest energy for excitation?

  1. F

  2. Cl

  3. Br

  4. I
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fluorine has a small size thus it has a high nuclear charge and its electrons are strongly attracted towards the nucleus. Thus it requires high energy for excitation. Among halogen atoms, fluorine requires the highest energy for excitation.