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.
DEXTRIN Intermediate product of hydrolysis of starch. It consists of maltose & glucose. It is found in yeast & some bacteria.
Excretion in Non-Chordates Excretion as described under Introduction of this unit refers to removal of the waste products of metabolism - carbon dioxide (CO 2 ) and water rele
Q Coming from the acid pH of the stomach which pH level does the chyme find when it enters the duodenum? Why is it necessary to maintain that pH level in the small intestine? What
Chronic Mitral Regurgitation : In chronic mitral regurgitation, the asymptomatic phase is much longer than in mitral stenosis. Onset of symptoms may also mean the onset of l
Define about the Ascorbic acid (vitamin C)? Ascorbic acid was discovered as the anti-scurvy vitamin. Vitamin C (chemical names ascorbic acid and ascorbate) is the six-carbon la
What is transgenic food? Transgenic beings are animals, microorganisms and plants that have recombinant DNA, i.e., genes from other plants, microorganisms or animals artificial
Objectives of psychological components It is essential to have objective scores, in order to identify and classify deficits in psychological components and processes. The nee
Plants are supplied with adequate amount of phosphorus Phosphorus has also been associated with early maturity of crops particularly the cereals. Its shortage is accompanied by
Define Counseling and compliance for celiac disease? If symptoms do not improve, the child's diet should be reviewed and evaluated. A decrease in diarrhoea, increase in height
WHERE DOES LIZARD LIVE
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