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Explain the Bohr's model?
Bohr's Model : Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an electron at any given moment can only be predicted on the basis of probability. In a widely accepted model of the atom originally proposed by Neils Bohr, electrons move in spherical spaces called orbitals, or shells, which correspond to different energy levels. Electrons are distributed according to their energy levels, with the higher energy electrons residing in the outer shells. The innermost shell contains only 2 electrons. In common elements, the next outer shells contain 8 electrons each.
Atoms either gain, lose, or share electrons in the outer shells. Because the outer shells of many atoms are incomplete, most atoms will interact with other atoms during chemical reactions to achieve stable outer shells. The number of electrons that an atom must either gain, lose, or share to complete the outer shell is known as its valence, or oxidation number. For example, carbon has six electrons, two in its first energy level and four in the outer level. Thus, it can form a stable outer shell by gaining, losing, or sharing four electrons to complete its outer shell when it joins, or bonds, with another atom or atoms to form a compound. The following table lists the oxidation numbers of some important ions frequently used in Biology.
Cleft Palate Well you have now learnt about the cleft lip and now let us discuss and understand what is cleft palate. Cleft palate (CP) is midline fissure of the palate that
Q. Illustrate Pathology? Following rheumatic fever, over next few years to decades, the typical funnel shaped mitral valve assumes a fish mouth appearance. During rheumatic fev
Q. How is the cooling of tissues and organs for medical transplants associated with the effect of temperature upon enzymatic reactions? The molecular degradation during the dec
Write up your own Matlab program to do the job described by Show">http://www.avatar.se/molbioinfo2001/dynprog/adv_dynamic.html Show a few examples, your code does work. You wil
Pathophysiology The exact mechanism of glomerulonephritis is still under investigation. The dies'ease is characterised by deposition of immune complexes consisting of anti
Primary amines can act as bases; they can- Select one: a. Absorb a proton to become R-NH2+2 b. Release a proton to become R-NH2+ c. Absorb a proton to become R-NH3+
Post-partum anoestrus Reproductive efficiency among animals greatly depends upon detection of estrus. This is even more important in reference to small herds managed under tro
What is Ecology? Ecology is the field of Biology that studies the relationship among living beings and among living beings and the environment.
what is the mode of nutrition of fungi,bacteria and man
PSYCHOACTIVE SUBSTANCE USE DISORDERS: Drug: It is derived from a French word 'drogue'. A medical substance used in the treatment of disease. (Taber's Dictionary). 'Drug d
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