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A hydrogen bond is an electrostatic attraction between a partially negative N or O atom and a partially positive hydrogen atom that is covalently bound to a different N or O atom. The partially negative N or O atom is known as the hydrogen bond acceptor, and it must have a free lone pair of electrons in order to participate in a hydrogen bond.
Revision notes on 2.4.1 Water & the Hydrogen Bond for the CIE A Level Biology syllabus, written by the Biology experts at Save My Exams.
A hydrogen bond is a weak interaction between a strongly electronegative atom and a hydrogen atom on another molecule. They are important in stabilizing the structure of many biological molecules.
The Hydrogen molecule. We are now in a position to discuss the electronic structure of the simplest molecule: H2. For the low-lying electronic states of H2, the BO approximation is completely satisfactory, and so we will be interested in the electronic Hamiltonian. a “B” label the two nuclei.
biological matter, about 99%, is made of just six elements: carbon, hydrogen, nitrogen, oxygen, sulfur, and phosphorus. Most biological molecules, such as proteins, carbohydrates, lipids, and nucleic acids, are exclusively composed of these elements. A few other atoms also play roles in biology;
The hydrogen and oxygen atoms that combine to form water molecules are bound together by covalent bonds. The electron from the hydrogen atom divides its time between the outer shell of the hydrogen atom and the incomplete outer shell of the oxygen atom.
From the view point of pedagogy, the hydrogen atom merges many of the concepts and techniques previously developed into one package. It is a particle in a box with spherical, soft walls. Finally, the hydrogen atom is one of the precious few realistic systems which can actually be solved analytically. The Schrodinger Equation in Spherical ...
