Why h20 is liquid
With the increase in atomic number of electro negativity is decreasd in this group, hence the tendency to show the positive oxidation states will increase.
Chapter Chosen The p-Block Elements. Book Chosen Chemistry I. Subject Chosen Chemistry. Book Store Download books and chapters from book store. Currently only available for. Class 10 Class The p-Block Elements. H 2 O is a liquid at room temperture because it is highly associated via intermolecular hydrogen bonding. H 2 S, due to large size of sulphur cannot form hydrogen bonding. Asked 3 years, 11 months ago.
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TheChemist TheChemist 2 2 silver badges 12 12 bronze badges. They,re just hydrogen bonds", said once, and they are between hydrogen and a much more electronegative element with compact atoms typically N, O, or F.
The Special Case of Water. A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen.
Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds. Consequently the electrons in the water molecule spend slightly more time around the oxygen atomic center and less time around the hydrogen atomic centers. The covalent bonds are therefore polar, and the oxygen atoms have a slight negative charge from the presence extra electron share , while the hydrogens are slightly positive from the extra un-neutralized protons.
Opposite charges attract one another. The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak. Water is such a good solvent, in fact, that it is almost impossible to find naturally in a pure state; even producing pure samples in the laboratory is difficult.
Almost every known chemical compound will dissolve in water to a small but detectable extent. Because of that, water is one of the most reactive and corrosive chemicals we know. That ability to interact with so many things is crucial for life. It means that water can dissolve a wide variety of nutrients and other ingredients and move them around our bodies. Evolution has shaped these long, sophisticated molecules so that they have certain sections that easily mix with water, using hydrogen bonds, and other sections that shun water, like oil refusing to mix.
The billions of protein molecules inside your body only fold into the right shapes to do their jobs because their interaction with water nudges them into the correct three-dimensional formats. Think of a liquid and it will most likely be water. Water is so common and so familiar that it is mundane: every day we drink it, touch it, wash with it, wet things, dry things, we boil it, freeze it and swim in it.
We live in a world where the environmental conditions allow us to explore the landscape of water at different temperatures and pressures; where it can slide comfortably between solid, liquid and gas or sometimes all three at once. The more we examine water, the stranger it gets. We study it because we are made from it, and it is, perhaps, surprising that the thing we are made from is still such a mystery.
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