Lewis Structures

The number of molecules from the following which contain only two lone pair of electrons is _____________

${\mathrm{H}}_2\mathrm{O},{\mathrm{N}}_2,\mathrm{CO},{\mathrm{XeF}}_4,{\mathrm{NH}}_3,\mathrm{NO},{\mathrm{CO}}_2, {\mathrm{F}}_2$

Draw the structure of tetra cyano ethylene.

Write Lewis dot structure of carbon tetrachloride.

Which of the following statements is true?

Lewis dot structure of ${\mathrm{C}}_2{\mathrm{O}}_4{\mathrm{H}}_2$.

According to the Lewis formula of ${\mathrm{O}}_3$, the correct option is

Total number of lone pairs of electrons present in ${\mathrm{HClO}}_4$ is

The set of molecules in which the central atom is not obeying the octet rule is

Which one of the following molecules contains an incomplete octet of the central atom?

According to Lewis structure the number of lone pair & bond pair of electrons in ${\mathrm{SO}}_4^{2-}$ion.

Write Electron dot structure of Sodium

The number of species below that have two lone pairs of electrons in their central atom is.

${\mathrm{SF}}_4, {\mathrm{BF}}_3, {\mathrm{CIF}}_3, {\mathrm{AsF}}_3, {\mathrm{PCl}}_5, {\mathrm{BrF}}_5, {\mathrm{XeF}}_4, {\mathrm{SF}}_6$

What is the dot structure of HMnO₄

What are the main steps for writing Lewis dot structure?

Draw an electron dot structure of the following molecules.

a. Methane     b. Ethene

c. Methanol    d. Water

Draw the electron dot structures of the following compounds and state the type of bonding in each case:

(i) ${\mathrm{CO}}_2$

(ii) $\mathrm{MgO}$

(iii)  ${\mathrm{H}}_2\mathrm{O}$

(iv) ${\mathrm{MgCl}}_2$
 

What would be the electron dot structure of carbon dioxide which has formula ${\mathrm{CO}}_2$?

Define expanded octet.

What is electron dot structure? 

Octet rule does not valid for