Question

Lewis Structures for Covalent Compounds 

Lewis dot structures show all the valence electrons in an atom or molecule. Lewis dot structures are most often used to show covalent bonding. For example. the dot structure of NF3 is shown in the figure. (figure 1) which shows a total of 26 valence electrons (6 bonding and 20 nonbonding).

Part A

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SiO2,

Enter the number of bonding electrons followed by the number of nonbonding electrons in the dot structure of this molecule separated by a comma (e.g., 1,2).

Part B

Draw the main Lewis structure of NOF. Draw nonbonding electrons using the dot notation and bonding electrons as a bond.

Answer 1

Concepts and reason

The concept used to solve this problem is based on the Lewis dot structure. First, draw the Lewis dot structure for to calculate the bonding and nonbonding electrons. After that draw the Lewis dot structure of .

Fundamentals

Lewis structure:

It is an electron dot structure which represents the bonding and nonbonding electrons on each atom in a molecule

One of the example is given below.

Bonding electrons:

These are the electron pairs which take part in the bond formation by the two atoms.

Non-bonding electrons:

These are the electron pairs which are not involved in bonding. These are also known as “Lone pairs”. These are found in the outermost shell of an atom.

The Lewis structure of is shown below.

The Lewis structure of is shown below.

Ans:

The number of bonding and nonbonding electrons are .

The Lewis dot structure of is shown below.