According to Haney and Smith the percentage of ionic character of a polar covalent bond can
be calculated with help of the following expression
The %ionic character of covalent bond is:
The % ionic character of H-F bond is
Saturday, October 3, 2020
How to calculate the & ionic character in H-X bond of Halogen acids.Given that electronegativity of H ,F, Cl, Br. and I are 2.1, 4.0, 3.0, 2.8,and 2.5 respectively.
What is" Haney and Smith Scale" and How to use calculation of % ionic character of covalent bond ?
According to Haney
and Smith, the percentage of ionic character of a polar covalent bond can
be calculated with help of the following expression:
The % ionic character of covalent bond is given as:
Thursday, October 1, 2020
What are the others examples of NaCl type ionic salts ?
Most of the halides of alkali metals, oxides and sulphides of alkaline earth metals have this type of structures.
(1) Group 1st Halides
ie NaI, KCl, RbI, RbF ( except Cs halides) .
(2) Group 2nd oxide MgO, CaO, BaO, SrO ( except BeO)
(3) Ammonium Halides ie NH4Cl
,NH4Br ,NH4I etc
(4) Silver Halides ie AgF, AgCl,
AgBr ,( except AgI)
(5) Other examples , TiO ,FeO,
NiO etc
Note: Ferrous oxide also has sodium chloride, types structure in which O-2
ions are arranged in ccp and Fe+2 ions occupy octahedral ions. However,
this oxide is always non – Stoichiometric and has the composition Fe0.95 O It can be explained on the assumption that some of the Fe+2
ion are replaced by 2/3rd as many Fe+3 ions in the
octahedral voids.
Related topics:
SODIUM CHLORIDE (ROCK SALT TYPE) STRUCTURE:
ZINCE BLENDE (ZnS) TYPE STRUCTURE (SPHELERITE):
THE WURTIZE STRUCTURES (ZnS):
CAESIUM CHLORIDE (CsCl) STRUCTURE:
CALCIUM FLORIDE (FLORITE) STRUCTURE:
ANTIFLUORITE STRUCTURE (REVERE OF FLUORITE) Na2O:
SPINEL STRUCTURE :
Graphite is considere, thermodynamically the most stable allotrope of carbon why ?
Thermodynamically the most stable allotrope of carbon is considered to be graphite. This is due standard enthalpy of formation of graphite is taken zero .while enthalpy of formation of diamond and fullerenes are 1.90 KJ/Mole and 38.1 KJ/Mole respectively.
Reference:
STRUCTURE OF GRAPHITE:
Related-topics:
STRUCTURE OF FULLERENCES :
STRUCTURE OF DIAMOND :
What are structural information of Dimomd ?
All the carbon atom of fullerenes (C60) are equivalent but all C-C bond are not equivalent why ?
Related Questions:
What are Silicates ? explain different type of silicates with examples.
What are the Silicones? Give one example one cyclic Silicone?What is the structure of trimetaboric acid and trimetaborate ion?
All the carbon atom of fullerenes (C60) are equivalent but all C-C bond are not equivalent why ?
In the fullerenes (C60) structure C-C bonds of two different bond length occur at the fusion of two six membered rings the bond length is C-C = 135.5 pm and at the fusion of five and six membered rings C-C bond length is 146.7 pm.
Reference:
STRUCTURE OF FULLERENCES :
Related-topics:
STRUCTURE OF GRAPHITE:
STRUCTURE OF DIAMOND :
Silicon Oxide : Silica (SiO2):
What are structural information of Dimomd ?
Related Questions:
What are Silicates ? explain different type of silicates with examples.
Subscribe to:
Posts (Atom)