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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.
How does the circulatory system participate in the functioning of the endocrine system? The circulatory system is fundamental for the performance of the endocrine system. The b
keel is the characteristic feature of flower of 1.tomato 2. tulip 3.ubdugifera 4.aloe
Functions of cerebrum The forebrain is otherwise called as ‘cerebrum'. It is highest centre for controlling several functions in the body, The most interesting aspect
Proteins of Animal Origin - Shell Fish Shell Fish: Information on shellfish is fragmentary and incomplete. In shell fish, the shell comprises of a large portion of live weight
Gaseous Exchange Gaseous exchange is take place on by both mantle and the gills. The gills of most bivalves are highly changed for filter feeding. They are derived from the pr
What is an Erlenmeyer flask and how is it used? It is same to a beaker, except that it gets narrower at the top. It is use to hold liquids and do reactions in it.
The vertebral bodies are much larger in the lower back than the neck. What is the functional significance of this structural difference?
Q. What is Echocardiography in pericardial diseases? Ans. One of the earliest clinical applications of echocardiography was in the detection of pericardial effusion and it rema
Define Specialized Nutritional Requirements for catch up growth for infants with CHD? The nutritional requirement for catch up growth for infants with CHD is listed in Table. B
in what part of the human body aschelminthes found?
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