Name: Types of Intermolecular Forces
Uploaded: 2019-07-19
Duration: 8 min 7 s
Description: An intermolecular force mediates the interaction between molecules, including the forces of attraction or repulsion, which act between atoms and molecules.

Question

Write the Lewis dot structures of the following:

${HNO}_{3}$

Accepted Answer

To draw the Lewis dot structure of an ion or molecule, we first need to note the number of valence electrons present in each atom of the species. ${HNO}_{3}$ has $5$ valence electrons, and $O$ has $6$ valence electrons. Nitrogen requires to gain three more electrons to attain its octet, and oxygen requires two more electrons to attain its octet. So, there must be $8$ electrons surrounding each of the three oxygen atoms and the nitrogen atom. Let the valence electrons of $O$ be represented as dots $(.)$ and those of $N$ be represented as crosses $(x)$ for distinguishing between the two atoms.

Number of electrons used up in forming single bonds = 8

Number of valence electrons left = 24 - 8 = 16

Putting all the remaining valence electrons around each atom, the structure can be represented as :

There are 18 valence electrons in the overall molecule, which is 2 more than 16 electrons.

Oxygen can form a maximum of 2 covalent bonds. So, the oxygen atom between H and N is stable. The number of valence electrons on the other two oxygen atoms are 6 electrons each. So, one electron from the N atom, and one electron form than of the two O atoms will form a covalent bond. The final stable Lewis dot structure can be represented as follows :

Write the Lewis dot structures of the following:

${HNO}_{3}$

Important Questions on Chemical Bonding and Molecular Structure

Learn and Prepare for any exam you want !

Write the Lewis dot structures of the following: HNO3

Important Questions on Chemical Bonding and Molecular Structure

Learn and Prepare for any exam you want !

Write the Lewis dot structures of the following:

${HNO}_{3}$