New User? Sign Up. Create your account now. Signup with Email. Gender Male Female. Create Account. Already Have an Account? Which one of the following is explosive and readily hydrolysed?
Correct answer is option 'C'. Can you explain this answer? Answer to Question. Shashank Jaiswal Dec 22, As the discoverer, he was not to know that this oily yellow liquid was violently explosive, and it cost him an eye and two fingers accounts vary as to how many fingers.
He told Sir Humphrey Davy about his findings. Showing true scientific curiosity, Davy repeated the synthesis and the explosion ; a piece of glass lodged in his cornea. It was while he was temporarily blinded that Davy hired Michael Faraday as his assistant. Faraday also experienced the explosive power of NCl 3. He wrote:. I was able to escape four violent explosions.
The most terrible of them happened when I held between my thumb and index finger a small test-tube containing seven grains of nitrogen trichloride. The explosion happened so suddenly that on opening my hand some of my nail was torn away; my fingers were burnt so much that I still am unable to use them like before. The chloride of nitrogen is the most violently explosive substance yet discovered, and should not be experimented upon by the student in quantities larger than a mustard seed at a time, and even in this quantity, with great caution.
Both its discoverer Dulong , and Sir H. Davy, notwithstanding their experience and caution as chemical experimenters, were seriously injured by its violence. The bulkier a nucleophile is, the more difficult it is to attack the substrate, and the weaker the nucleophile becomes. Water and methanol are bad nucleophiles, but if you deprotonate them, they become good nucleophiles. Nucleophilicity decreases to the right in the periodic table. So nitrogen is more nucleophilic than oxygen which is more nucleophilic than fluorine.
OH is a much better nucleophile than Br ; this reaction would revert if it ever happened. SH- anion is more nucleophilic than OH- anion as the negative charge is more stable on oxygen atom than sulphur, because of higher electronegativity of oxygen. So for the original question, I would lean towards S2- being a better nucleophile than Se2-, because as a stronger weak base, S has concentrated charge that can be donated to an electrophile more readily than Se.
The larger Se atom spreads its charge out more is more diffuse , making it more stable and less reactive. In polar protic solvents e. In polar aprotic solvents e. DMSO, acetone the order is reversed, and the most basic nucleophiles are also the most nucleophilic. Take home points on electrophiles: 1 They want electrons, meaning they are electron deficient.
Sulfur is a larger atom than oxygen, making its electrons more polarizable. Thus, it is a stronger nucleophile than oxygen.
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