Group 17 elements - general properties - class-XII
Description: group 17 elements - general properties | |
Number of Questions: 54 | |
Created by: Niharika Sharma | |
Tags: the p-block elements chemistry p-block elements p- block elements-ii |
Which has a lowest electron affinity among the following?
The electronic configuration of four atoms are given in brackets:
L : ($1s^2\,2s^2\,2p^1$); M : ($1s^2\,2s^2\,2p^5$);
Which is the correct arrangement of the compounds based on their bond strength?
Mark the correct statements about halogens.
The property of halogens which is not correctly matched is:
Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?
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 |
Which one of these group off elements is also called the halogen family?
Less ionic compound among the following
$ { 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.
In NaOX , X cannot be
The strongest oxidising agent is :
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?
Affinity for hydrogen is maximum for
Which requires the highest energy for excitation?
Halogens means:
Which of the following has seven valence electrons?
Which of the following statement is wrong? In the reaction $2KCl{ O } _{ 3 }+{ I } _{ 2 }\rightarrow 2KI{ O } _{ 3 }+{ Cl } _{ 2 }$?
For electron affinity of halogens which of the following is correct?
Chlorine has two naturally occuring isotopes $ _{ 17 }^{ 37 }{ Cl }$ and $ _{ 17 }^{ 35 }{ Cl }$ and average atomic mass of chlorine is $35.5$. The percentage of $ _{ 17 }^{ 37 }{ Cl }$ is:
Select the correct statement (s)
Addition of halogen $(C{l _2} or B{r _2})$ to alkenes goes through formation of :
In which of the following, oxidation number of chlorine is $ + 5 ?$
Which of the following has highest chlorine content ?
Compare oxygen and flourine in Ionic radius$\quad O^{2-} , F^-$:
Oxidation of hydrogen halide, HX affords a method for the industrial and laboratory preparation of the halogen, $X _2$, in the free state in respect of all of the following except :
Which f the following atoms has the highest ionisation energy ?
Which of the following is incorrect statement?
The correct order of reactivity is:
The outer most electronic configuration of the most electronegative element is:
Generally non-metals are non-lustrous. Exception to this property is-
The halogen $($Group $17$ elements$)$:
Which of the following have large electronegativity values?
Assertion: Fluorine has the highest value for electronegativity.
Reason: Fluorine has the greatest attraction for electrons.
Among the following which has higher electron affinity value ?
With which of the following halogen,germanium does not form a dihalide?
Which of the following chalcogen does not make bonds with germanium?
Which of the following element has metallic lustre?
Which of the following has most ionisation enthalpy?
Which of the following is most electronegative?
The elements with atomic numbers 9, 17, 35, 53 and 85 belong to noble gases columnz__________.
Elements of which group form anions most readily:
In the third excited state the number of unpaired electrons in chlorine atom is:
Which of the following shows only one oxidation state in its compounds:
The number of p-electrons in bromine atom is:
Which one of the following is the correct order for the bond energies of halogen molecules?
The electro valency theory explains that atoms are held together by an attractive force.
Arrange the following atoms in the order of increasing atomic radius.
F, Cl, C, O
Sea weeds are an important source of :
Which is the most active element among folllowing?
Which of the following is correct?
Formula of Freon is:
Have you ever noticed the fact that two siblings can have different personalities? Even though two people may be members of the same family, it does mean that they will behave in similar ways.
The same thing can be said about elements in a group ("family") on the periodic table. For example, fluorine and iodine are members of the halogen family, but their physical properties are different, as shown in the table below.
Element | Melting Point $(^{\circ}C)$ | Boiling Point $(^{\circ}C)$ |
---|---|---|
Fluorine | $-220$ | $-188$ |
Iodine | $+118$ | $+184$ |
Which of the following is the BEST explanation for these differences in melting and boiling point?
Which is soluble in water :