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.
Define Endurance capacity by standard running tests? Endurance capacity, on the other hand, is measured by standard running tests in which time to exhaustion is taken as the en
Define the term- Adaptation The terms scotopic and photopic vision are relative to the lighting conditions of an individual place. Light adaptation is a very quick process and
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Q. Generally which phase of the cell cycle has longer duration? The mitotic phase has quite a shorter length and the interphase comprises approximately 4/5 of the cell cycle.
How can I get assignment order
Action potentials include changes in the membrane potential of an axon, as shown in the schematic below. During the refractory period, sodium channels are inactivated and
how to explain an example from each class of vertebrate
Define Basic Calculations during the practical work in Laboratory? Some basic mathematical formulas and conversion factors are given herewith to help you in your calculations d
Salmonellosis Salmonellosis is an infection caused by bacterial species belonging to the genus Salmonella and usually associated with the ingestion of food containing salmonel
Why are euglenas involved in polemics related to their taxonomic classification? Euglenas are included in taxonomic polemics because they tend to be classified sometimes as pro
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