Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
geographical range graph on minimum and maximum range of tolerance
What is excretion? Excretion in Physiology is the method of elimination of metabolic wastes and other toxic substances from the body.
Pathogenic bacteria Heterotrophic bacteria could be divided into saprophytes and parasites. Saprophytes normally do not cause any disease and they survive on dead or decaying
Measurements of the level of pollution There are many factor for finding the level of pollution in the waste waters that generally find out the quantity of organic matter susp
NEO DARWINISM OR SYNTHETIC THEORY OF EVOLUTION - It is the synthesis of the ideas of Neo Darwinians as a new theory of evolution based upon recent findings of genetics and m
What are the structures that participate in the human auditory sensitivity? The structures of the human auditory sensitivity are the ears (external, middle and internal), the
Explain Food Applications of gum karaya The water absorbing and water-holding capacity of Karaya, together with an excellent acid compatibility made it suitable for its use
Explain Inhibitors Inhibitors: Citrate synthase is inhibited by ATP, NADH, succinyl CoA and acyl CoA derivative of fatty acids (fatty acyl CoA). The rate of the reaction is
What is Simple Transposition in Neonates ? A baby with this malformation needs to be operated without delay. A very cyanosed infant will require palliation by balloon arteries
What is the significance of Malpighian tubules? Excretory structures found in insects and some spiders. Though similar in appearance and function the two aren't homologous. Mal
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd