Group 17 elements

F2

________ has yellow, Cl2 has greenish yellow, Br2 has red and I2 has violet color.

Fluorine

________ doesnt have d- orbitals and hence cant expand its octet.

Fluorine

________ and Chlorine are gases, Bromine is a liquid and Iodine is a solid.

Marine life

________ contain Iodine in their systems; various seaweeds contain iodine too.

greenish yellow gas

It is a(n) ________ with pungent and suffocating odor.

Halogens

________ have the least atomic size in their respective periods because they have maximum effective nuclear charge.

Fluorine

________ forms only two oxides OF2 and O2F2 among which only OF2 is thermally stable.

ClO2

________ is used as a bleaching agent.

I2O5

________ is a very good oxidizing agent used in the estimation of carbon monoxide.

Affinity

________ for hydrogen decreases from fluorine to iodine.

Astatine

________ is a radioactive element.

Chlorine

________ is liberated at anode in electrolysis of brine.

laboratory

In ________, it is prepared by heating sodium chloride with concentrated sulphuric acid.

Ii

(________) Electrolytic process: Chlorine is obtained by the electrolysis of brine.

Sea water

________ consists of chlorides, bromides, iodides of Sodium, Magnesium, Potassium and Calcium but as we know ________ majorly contains sodium chloride.

Chlorine oxides

________, Cl2O, ClO2, Cl2O6 and Cl2O7 are highly reactive oxidizing agents and tend to.

number of metals

It reacts with a(n) ________ and non- metals to form chlorides.

ClF

They are all volatile solids or liquids at 298K except _____ which is a gas.

oxidation of hydrogen chloride

(I) Deacons process: By ________ gas by atmospheric oxygen in the presence of CuCl2 (catalyst) at 723 K.

Interhalogen compounds

In general, ________ are more reactive than halogens (except fluorine)

Halogens

________ have maximum negative electron gain enthalpy in their respective periods, this is because they need only one electron to achieve the noble gas configuration.

F2

Oxidizing ability of the halogens decreases down the group with ________ being a powerful oxidizing agent.

Fluorine

________ behaves anomalously due to its small size, highest electronegativity, low bond dissociation enthalpy, and non availability of d orbitals in its valence shell.

Chlorine

________ can be prepared by heating manganese dioxide with concentrated HCl or by the action of HCl on potassium permanganate.

fluorine forms

Due to high electronegativity and small size, ________ only one oxoacid, HOF known as fluoric (I) acid or hypofluorous acid.

Chlorine

________ is used in textile industries and in the manufacture of dyes, drugs, organic compounds, poisonous gases.

Fluorine

________ is present in form of insoluble fluorides and also in teeth and bones of animals.

Halogens

________ are highly reactive non- metals.

Order of Atomic radius

I> Br> Cl> F

Order of Ionization Enthalpies

F> Cl> Br> I

Order of Electron Gain Enthalpy

Cl> F> Br> I this is because Fluorine has small size and has more interelectronic repulsions so the incoming electron doesnt face much attraction

Order of electronegativity

F> Cl> Br> I> At

Bond Dissociation enthalpies Order

Cl-Cl> Br-Br> I-I

Order of Acidic strength

HF < HCl < HBr < HI

Order of Bond dissociation enthalpy

H-F > H-Cl > H-Br > H-I

Order of stability

H-F > H-Cl > H-Br > H-I

Order of Bond length

HF < HCl < HBr < HI

FACT 1

O2F2 oxidizes plutonium to PuF6 and the reaction is used in removing plutonium as PuF6 from spent nuclear fuel

Order of stability of oxides

I> Cl> Br

Order of Ionic character of Metal halides

MF > MCl > MBr > MI

(i)Deacons process

By oxidation of hydrogen chloride gas by atmospheric oxygen in the presence of CuCl2 (catalyst) at 723 K

(ii) Electrolytic process

Chlorine is obtained by the electrolysis of brine

Formula of Bleaching powder

Ca(OCl)2.CaCl2.Ca(OH)2.2H2O

Fact 2

The word Tear gas can be heard in most of the military themed movies but do you know its chemical formula