Chlorine gas - why Chlorine has Highest electron gain enthalpy ?

Electron gain enthalpy is the enthalpy Change take place when an electron is added to isolated gaseous atom .

Electron gain enthalpy of halogens are highly negative because this process is exothermic in nature and large amount of heat is released .

Fluorine is most electronegative element in the periodic table still it's electron gain enthalpy is less than Chlorine .

Why Chlorine has High electron gain enthalpy than Flourine ?

Size of fluorine is very small . So when an extra electron tries to attract toward this atom , their is large electron - electron repulsion take place between the outermost electrons and incoming electron . It becomes difficult for incoming electron to add up in the outermost shell .

On the other hand , Chlorine is larger in size than flourine and when extra electron come in contact with this atom , Chlorine immediately tries to attract toward itself . Due to larger size , their is less electron - electron repulsion and it becomes easier for an electron to enter the outermost orbit.

Therefore , Chlorine has more electron gain enthalpy than flourine

Comments

Types of reaction intermediates in organic chemistry

Intermediate is an unstable compound formed during a chemical reaction . This intermediate is very unstable and get converted into product as soon as it forms . Reaction intermediate forms in one step of a chemical reaction and get converted into product in the next step . There are basically four types of reaction intermediates in organic chemistry ◆Carbocation ◆carbanion ◆free radical ◆carbene Carbocation Carbocation is an intermediate in which carbon atom carries a positive charge . Carbocation is obtained during heterolytic fission. Heterolytic fission is defined as break down of covalent bond in such a way that more electronegative atom attract both the electrons . Carbocation is formed when more electronegative atom is directly attached to carbon atom during fission . Carbocations are sp2 hybridized having trigonal planar geometry Stability of carbocation depends on how easily electron density of carbocation can be increased . More the electron donati...

Why Solids are rigid and incompressible ?

Matter is anything that has a mass and occupy space . Ice , pen , pencil ,dog , etc are examples of matter because they have some mass and they occupy space . There are basically three states of matter , ●Solid ●Liquid ●Gas Solid Solid is defined as rigid and incompressible state of matter . Now the question is , why Solids are rigid and incompressible ? To answer this question , let's understand the properties of solids . 1.Solids have large intermolecular force of attraction . Intermolecular force is the force of attraction between to adjacent Molecules . Higher the intermolecular force , more tightly they will attract each other and less movement of Molecules will occur . 2.Intermolecular distance in Solid is very less . Intermolecular distance is the distance between two adjacent molecules . Less the distance more will the intermolecular force of attraction . Intermolecular force is inversely proportional to intermolecular distance . ...

Most amazing Chemistry facts - unknown facts of chemistry

Chemistry facts Chemistry is full of Amazing and unknown facts . In this post , I have show some Chemistry amazing and daily life facts . Following are some interesting Chemistry Facts : Rain contain Vitamin ◆B12 Fool's Gold is also called to ◆Mineral Pyrite(FeS2) Most Inert Element in Universe ◆Helium Most Ductile Element ◆Gold Only Letter that doesn't appear in Periodic Table ◆Letter 'j' Only Two Non -Silver Metal ◆Copper and Gold ◆You Can't Taste Food Without Saliva ◆Liquid Oxygen is blue in color ◆Elements Which are Liquid at Room Temperature ◆Bromine and Mercury softest Known Substance ◆talc ◆Lighter was invented before Match Stick ◆DNA don't Catch Fire ◆Many Radioactive Elements Glow in Dark ◆Frog Don't Drink Water They absorb it throw Atmosphere ◆Tooth Enamel is the Hardest Substance in Human Body Surface of Mars is Red due to Presence of ◆Iron Oxide If you have any amazing facts related to Chemistry then p...

ATOMS 4U

Search This Blog