Questions: Fill in the lone pairs needed to give the main group elements (except hydrogen) an octet. Part 1 of 2

Transcript text: Fill in the lone pairs needed to give the main group elements (except hydrogen) an octet. Part 1 of 2 $\square$

Solution

Solution Steps

Step 1: Identify the Main Group Elements

First, identify the main group elements in the given structure. Main group elements are those in groups 1, 2, and 13-18 of the periodic table. Hydrogen is an exception and does not need an octet.

Step 2: Determine the Number of Valence Electrons

For each main group element, determine the number of valence electrons it has. This can be found from its group number in the periodic table.

Step 3: Count the Electrons in Bonds

Count the number of electrons each element is sharing in bonds. Each single bond represents two shared electrons.

Step 4: Calculate the Number of Lone Pairs Needed

For each main group element, calculate the number of electrons needed to complete an octet (8 electrons). Subtract the number of electrons already present in bonds from 8 to find the number of electrons needed. Divide this number by 2 to find the number of lone pairs required.

Step 5: Add Lone Pairs to Each Element

Add the calculated number of lone pairs to each main group element to ensure each has a complete octet.

Final Answer

Since the specific structure is not provided, the general approach is outlined above. Apply these steps to the given structure to fill in the lone pairs needed for each main group element to achieve an octet.

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