Group 17 - physical properties - class-XII
Description: group 17 - physical properties | |
Number of Questions: 40 | |
Created by: Prabha Kade | |
Tags: group 17 p-block elements p- block elements-ii the p-block elements chemistry |
The comparatively high boiling point of hydrogen fluoride is due to:
Which of the following has highest melting point?
Which of the following statements is true?
The element which exists in the liquid state is:
Which of the following is a solid at room temperature?
Change in entropy is negative for:
The halogen which is liquid at room temperature is:
Which of the following exists as gas?
Which of the following properties of the elements chlorine,bromine and iodine increase with increasing atomic number?
Which of the following species has the lowest boiling point?
The electron affinity values (in kJ $mol^{-1}$) of three halogens X, Y and Z are respectively$ -349, -333 $and $-325$.
Which of the following possesses the highest bond energy?
Which of the following is incorrect?
Select the correct increasing order of $\pi$ bond formation tendency from the following :
Match the following
Set- I Set - II
A) $F _{2}$ 1) pale yellow colour gas
B)$Cl _{2}$ 2) violet colour solid
C)$Br _{2}$ 3) orange liquid
D)$I _{2}$ 4) greenish colour gas
Correct the matching is
The colour of iodine is:
The only liquid non-metal is:
Which of the following is not the characteristic of interhalogen compounds?
Which of the following non-metal appears as a liquid under standard condition?
Which of the following contain elements in the solid, liquid and gas phases at STP?
$I$. Under standard conditions the states of the elemental forms of the halogens are: iodine-solid, bromine-liquid, chlorine-gas, fluorine-gas.
$II$. Diatomic halogen molecules exhibit dispersion forces and increase in mass moving down through the family.
________ exist as diatomic molecules at room temperature.
Which of the following is not a green house gas?
Which of the following does not truly represent the property indicated against it?
The only non-metal, which is a liquid at room temperature is:
Which of the following is the only nonmetal that appears as a liquid in its elemental form under standard conditions?
Least melting point is shown by the compound-
Select the correct order of polymerization tendency from the following :
Consider occurance of the halogen family in the periodic table and choose true statements.
Statement I. Fluorine is the most active nonmetallic element in the periodic table.
Statement II. As you move down the family the state of the halogens is from a solid to a gaseous state.
Statement III. By filling the outermost d orbital, the halogen elements can be converted to ions.
Treatment of the dry solid _____ with a mild oxidizing agent produces a purple solid.
Statement I : The physical state of halogen molecules may be solids, liquids or gases at room temperature.
Statement 2 : The halogen molecules are considered as nonpolar and by increasing mass the dispersion forces between them increases.
The colour of chlorine gas is:
The halogen with the smallest covalent radius is:
The bond energies of $F _{2}, Cl _{2}, Br _{2}$, and $I _{2}$ are 155 kJ $mol^{-1}, \ $244 kJ $mol^{-1}$, 193 kJ $mol^{-1}$ and 151 kJ $mol^{-1}$ respectively. The weakest bond will be in:
Which of the following family exist as diatomic molecules at room temperature?
The compound IF$ 7$ is named as ________.
Statement 1 : Elemental iodine has a higher boiling point than elemental bromine.
Statement 2 : Iodine forms stronger covalent bonds than bromine.
Statement 1 : Bromine has a higher boiling point than chlorine.
Statement 2 : Bromine has stronger dispersion forces than chlorine.
The solubility of $KCl$ is relatively more in (where D in dielectric constant):