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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.
Q. Advantage and Disadvantage of steam sterilization? Advantage: most efficient and reliable sterilization method available. Its quite simple to operate and relatively inexpens
Explain about Probiotics and Prebzotics? We all have read or heard about probiotics and prebiotics at some point of time. However, what exactly do we mean by these terms? When
Using a Tissue Punch The implant heads are located and using a suitable sized tissue punch(depending on the implant diameter), the tissue punch is used and takes a circular pie
Cells regulate their level of activity by regulating the amount of proteins present in the cell at any given time, so an up regulation of enzymes would be expected to A. increase t
Foods to be avoided are: High fibre foods like whole grain cereals and their products (e.g. whole wheat flour, cracked wheat, whole pulses) Raw vegetables and fruits Fri
In Dental Traumatology Traumatic injuries in young kids (8 to 14 years old male > female) are commonly nowadays. Dental traumatic injuries are mostly in anterior teeth
examples on woody perennial Angiosperm species and herbaceous annual angiosperm species. thanks
How does being able to reproduce asexually benefit the plant?
Which of the following abnormal blood work results is most closely associated with a diagnosis of multiple myeloma? A. Extremely high levels of abnormal lymphocytes B. Low potassiu
Define the Phytate and Protein Interaction? You may be more familiar with phytate's role in mineral absorption. However phytates also bind with starch and protein. Depending on
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