Periodic Properties
Trending Questions
Q. Statement I: Acidic strength increases in the order given as
HF<<HCl<<HBr<<HI
Statement II: As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr, and HI decreases and so the acidic strength increases.
In the light of the above statements, choose the correct answer from the options given below.
HF<<HCl<<HBr<<HI
Statement II: As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr, and HI decreases and so the acidic strength increases.
In the light of the above statements, choose the correct answer from the options given below.
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is true but Statement II is false
- Statement I is false but statement II is true
Q. Which of the following is not a type of addition polymerisation?
- Free radical polymerisation
- Polycondensation polymerisation
- Anionic polymerisation
- Cationic polymerisation
Q.
Name the non-metal that is liquid in room temperature.
Q.
Give an example of a gaseous non-metal.
Q. Asseration:Phenol is more reactive than benzene towards electrophilic substitution reaction. Reason:In the case of phenol, the intermediate carbocation is more resonance stabilised
Q. Which of the following will exhibit maximum ionic conductivity?
- K4[Fe(CN)6]
- [Co(NH3)6]Cl3
- [Cu(NH3)4Cl2]
- [Ni(CO)4]
Q.
The absolute value of the electron gain enthalpy of halogen satisfies-
I > Br >Cl> F
F >Cl> Br > I
Cl> F > Br > I
Cl> Br > F > I
Q. Which among the following is the most reactive?
- Br2
- I2
- ICl
- Cl2
Q. Which of the following acids is most acidic?
- Cl2CHCOOH
- ClCH2COOH
- CH3COOH
- Cl3CCOOH
Q. Arrange the following alcohols in order of increasing reactivity towards sodium metal.
(i) (CH3)3C−OH (ii) (CH3)2CH−OH (iii) CH3CH2OH
(i) (CH3)3C−OH (ii) (CH3)2CH−OH (iii) CH3CH2OH
- (iii) < (ii) < (i)
- (ii) < (i) < (iii)
- (i) < (ii) < (iii)
- (iii) < (i) < (ii)
Q. Oxidizing action increases in the following order:
- Cl <Br< I< F
- Cl<I<Br<F
- I<Br<Cl<F
- I<F<Cl<Br
Q.
Name one liquid metal and one liquid non-metal.
Q. Which of the following metal carbonyl does not exist as monomer?
- Cr(CO)6
- Mn(CO)5
- Ni(CO)4
- Fe(CO)5
Q. Why is hydrogen referred to a rogue element????!
Q.
Predict the order of reactivity of the following compounds in SN1 and SN2 reactions
C6H5CH2Br , C6H5CH(C6H5)Br , C6H5CH(CH3)Br , C6H5C(CH3)(C6H5)
Q. Electronegativity of fluorine is greater than that of chlorine but electron affinity of chlorine is greater than that of fluorine.
- False
- True
Q. The correct order of hydrogen bond strengths is:
- ClH−−−Cl>NH−−−N>OH−−−O>FH−−−F
- ClH−−−Cl<NH−−−N<OH−−−O<FH−−−F
- ClH−−−Cl<NH−−−N>OH−−−O>FH−−−F
- ClH−−−Cl<NH−−−N<OH−−−O>FH−−−F
Q.
Why the halogens are Coloured?
Q. Find the incorrect order of acidic strength of following:
- None of the above
Q. In spite of having less electron affinity than chlorine, fluorine is the strongest oxidizing agent among the halogens, The most important reason for this phenomenon is :
- lower bond dissociation energy of F2 than Cl2
- much lower heat of hydration of F− than Cl−
- much greater heat of hydration of F− than Cl−
- greater electronegativity of F than Cl
Q. Most acidic compound among the following is:
- C6H5COOH
- HCOOH
- BrCH2COOH
- CH3COOH
Q.
The greenhouse effect is caused primarily by ________.
Q. what is the reactivity order of haloarenes in nitration?
Q. Arrange them on the basis of electronegativity of elements increases
H2O , NH3 , HF , CH3
Book Solution
CH3 <NH3 <H2O <HF
My Problem
Electronegativity of C is 2.5 so it is first. Electronegativity of N is 3.0 so it is second.
But how I can differentiate between H2O and HF
Is my way of solving this problem is correct and if not then what is correct way tell me.
H2O , NH3 , HF , CH3
Book Solution
CH3 <NH3 <H2O <HF
My Problem
Electronegativity of C is 2.5 so it is first. Electronegativity of N is 3.0 so it is second.
But how I can differentiate between H2O and HF
Is my way of solving this problem is correct and if not then what is correct way tell me.
Q.
What is the meaning of mearge?
Q. The elements of s-block group 1A that produce superoxides have
High electronegativity
- High ionization energy
High polarizability
Low ionization potential
Q.
Why is the reactivity of halogen atom in isopropyl chloride less reactive than in isopropyl bromide?
Q.
What is meant by tincture of iodine? Why is it used for?
Q. Halogens are diatomic or monoatomic?
On solving the hybridization part , we should consider halogens as diatomic or monoatomic?
Hybridization=1\2(V+M-C+A)
V=No.of valence electrons
M=No.of monoatomic atoms
C=No.of cations
A=No.of anions
On solving the hybridization part , we should consider halogens as diatomic or monoatomic?
Hybridization=1\2(V+M-C+A)
V=No.of valence electrons
M=No.of monoatomic atoms
C=No.of cations
A=No.of anions
Q. The standard free energy change for the given reaction is - 10.26 kcal mol−1 at 25∘C.
H2(g)+2AgCl(s)→2Ag(s)+2H+(aq)+2Cl−(aq)
A cell using the above reaction is operated at 25∘C under conditions,
PH2=1 atm
[H+] and [Cl−]=0.1 M
Calculate the emf of the cell.
H2(g)+2AgCl(s)→2Ag(s)+2H+(aq)+2Cl−(aq)
A cell using the above reaction is operated at 25∘C under conditions,
PH2=1 atm
[H+] and [Cl−]=0.1 M
Calculate the emf of the cell.
- 0.140 V
- 0.240 V
- 0.340 V
- 0.440 V
