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A single covalent bond is build when two atoms share a pair of electrons. Triple and double bonds can be formed when two or three such pairs are shared. A Lewis structure is a representation of a complex ion or molecule that shows the disposition of valence electrons (inner shells are not drawn) around each atom. 1-4 show Lewis structures of CH4, O2, H2O and N2, the last two molecules having a double and triple bond, respectively. These representations are entirely equivalent to the valence structures (1′-4′) in which each bonding pair of electrons are represented by a line.
Applications of flame photometry: A few common applications of flame photometry are given below. Flame photometry could be used to detect the presence of the elements o
When the azimuthal quantum number has a value of l=0 , the shape of the orbital is: (1) Rectangular (2)Spherical (3)Dumbbell (4)Unsymmetrical Ans: Spherical
Find the number of intensive variables? Consider the lime-kiln process CaCO 3 (s) → CaO (s) + CO 2 (g) Find the number of intensive variables that can be varied independen
Classification of polymers - Thermoplastics These are the polymers that can be simply softened repeatedly while heated and hardened when cooled along with little change in the
This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other. Thus, it must be a [14s + 2a] or a [14a + 2s]
Resonance effect - Effect of substituents on acidity Same as inductive effect, if the resonance producing group exerts minus effect that is, if it withdraws electrons, it raise
What is electromeyric effect
How many types of colloidal system? and which are they?
Write a conclusion on project "medicines uses''
Q. Determine mass of an electron? Ans. Three years later after J.J Thomson discovered the electron, the American scientist Robert Millikan used an oil drop experiment to accu
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