Question
What is Lewis point structure? Explain the rules of writing this with examples.

Answer

SELF

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Similar questions

  1. How many electrons will present in sub-shell having spin quantum number value of $-\frac{1}{2}$ for n = 4?
  2. Which of the following transition will have minimum wavelength and why?

n4 → n1, n4 → n2, n2 → n1.

  1. Give the number of radial nodes for 3s and 2p orbitals.
Discuss the factors affecting electron gain enthalpy and the trend in its variation in the periodic table.
Explain the nomenclature of organic compounds by common name system with examples.
Explain geometrical isomerism with the help of suitable example.
A compound on analysis found to contain following percentage composition:
Na = 43.4%, C = 11.4% and O = 45.3%. Determine the empirical and molecular formulae.
Given: the relative molecular mass of the compound is 106.
Calculate the standard enthalpy of formation of CH3OH(l) from the following data:

$\text{CH}_3\text{OH}(\text{I})+\frac{3}{2}\text{O}_2(\text{g})\xrightarrow{\ \ \ \ \ \ }\text{CO}_2(\text{g})+2\text{H}_2\text{O}(\text{I});\Delta_{\text{r}}\text{H}^\ominus=-726\text{kJ} \ \text{mol}^{-1}$

$\text{C}(\text{graphite})+\text{O}_{2(\text{g})}\xrightarrow{\ \ \ \ \ \ }\text{CO}_{2(\text{g})};\Delta_{\text{c}}\text{H}^\ominus=-393\text{kJ} \ \text{mol}^{-1}$

$\text{H}_2(\text{g})+\frac{1}{2}\text{O}_{2(\text{g})}\xrightarrow{\ \ \ \ \ \ }\text{H}_2\text{O}(\text{I});\Delta_{\text{f}}\text{H}^\ominus=-286\text{kJ} \ \text{mol}^{-1}$.

On the basis of VSEPR theory, compare the geometries of molecules of types $AB _2 E , AB _3 E$, $AB _2 E _2, AB _4 E , AB _3 E _2, AB _5 E$ and $AB _4 E _2$ with various examples. (Here $E =$ lone electron pair)
Pressure is determined as force per unit area of the surface. The SI unit of pressure, Pascal is as shown below:
1Pa = 1N m–2
If mass of air at sea level is 1034g cm–2, calculate the pressure in Pascal.
The equilibrium constant for the following reaction is 1.6 ×105 at 1024K $\text{H}_2\text{ (g) + Br (g)}\rightleftharpoons2\text{HBr (g)}$ Find the equilibrium pressure of all gases if 10.0 bar of HBr is introduced into a
sealed container at 1024K.
Balance the following equations in basic medium by ion-electron method and oxidation number methods and identify the oxidising agent and the reducing agent.

N2H4(l) + ClO3-(aq) → NO(g) + Cl-(g)