The aging of different organisms is mainly calculated by the special technique called the Radiocarbon dating. In this technique the age of any specimen is calculated on the basis of […]
This happens because of corrosion of copper , as the copper is exposed to air it reacts slowly with water from the moisture present in air, carbondioxide and oxygen. And […]
In case of SF4 there are 6 electrons in the outermost shell of Sulphur, out of these 6 electrons, 4 are utilized in bonding with fluorine and thus two unshared […]
Why the electron affinity or electron gain enthalpy of Chlorine is higher than Fluorine ? Even if Fluorine is most electronegative element.
Even if the Fluorine is most electronegative element still its electron gain enthalpy is lower than Chlorine. In case of Fluorine the size of valence shell is so small that the upcoming electron experiences repulsions so it is not practically easy for Fluorine to gain an electron as compared to Chlorine. On other hand in case 9f Chlorine the outer […]
Organic inter-conversions , Propene to 1-nitropropane,ethane to bromoethane, ethanol to but-1-yne, Propene to propyne, toluene to benzyl alcohol.
To answer this we have to see the reactive nature of phenol and the substituents attached to it. Acidic behavior of phenol depends on the fact that how easily it can loose a proton and make phenoxide ion which is stabilized by resonance. The methoxy group being electron donating group increases the electron density of the benzene and make it […]
White phosphorus exists in p4 molecule. In the molecular strain is quite high and it tends to break it as early as possible. On the other hand red phosphorus exists as polymer like structure. In red phosphorus the molecules join to make long chains and that makes them chemically inert or less reactive. For study of p4 molecule have a […]
Meaning of diprotic acid is that , it can loose two hydronium ions (H+) . For finding how many H+ ions it can give , we have to see its […]
It is the reaction between alkyl halides and sodium in the dry ether to give alkanes with higher number of carbon. 2R-X + 2 Na —> R-R +2NaX
Chlorobenzene and bromobenzene can be prepared by treating bezenediazonium chloride with cuprous chloride or cuprous bromide. This reaction is also called Sandmeyer’s reaction.
Actually the sigma bond involves head to head overlapping of orbitals, due to which the overlapping takes place on a larger extent. That makes the bond more stronger as compared to pie bond. In pie bond there is a sidewise overlapping of orbitals which leads to lesser extent of overlapping and thus the bond formed is not so strong as […]
1.Temperature :- With increase in temperature the rate of vaporization also increase thus it creates more pressure. Moreover with increase in temperature the kinetic energy of the vapours also increase. 2. Nature of liquid:- The liquids with lower inter-particulate attractions have high vapour pressure as the formation of vapours is easy . Like acetone is easily vaporized as compared to […]
The substances whose conductivity lies between 10-⁶ to 10⁴ ohm-¹ . The range lies between conductors and insulators. Types 1. n-type :- These type of semiconductors have excess electrons present […]
Calculate the radius of copper atom if it crystallise in face centred cubic lattice and has a density of 8.93 g / cm cube. Solution Structure given = fcc For […]
What is the decreasing reactivity order of halogen hydracids (HCl, HI, HBr) for addition reaction of alkenes? Explain.
The decreasing order of reactivity will be as follows:- HI > HBr > HCl In case of reactivity the HI will be the most reactive and then HBr and least reactive will be the HCl. This is due to the fact that the reducing character of Iodine is highest and it can easily break the H-I bond and thus can […]
The answer is simple just look at the combustion reaction of the hydrogen and you will get water.
#accomodation #of #light In our day to day life we face various exposure to light. The intensity of rays vary from source to source some are intense and some are […]
Interesting fact about Owl We all know that the owl is capable of night vision due its special eyes. But more than this I have noticed a unique feature in […]