【】C3H8 Lewis Structure ,Valence Electrons ,Formal Charge

April 28, 2021

C3H8 Lewis structure

Answer:

In C3H8 Lewis Dot structure,three single bonds exist among the three carbon atoms.

C3H8 Lewis structure

Or,

C3H8 Lewis structure

Read:CO2 Lewis Structure

Besides,each end carbon has three hydrogen atoms using three single bonds and the middle carbon has two hydrogen atoms.

In C3H8 Lewis structure,there are totally 20 valence electrons.

In C3H8 Lewis structure,all carbons follow the octet rule and all hydrogen follow the duet rule.

Explanation:

Hello,today I am going to draw the C3H8 Lewis structure in just few steps.

C3H8 Lewis structure Setup Step-1:

To draw the C3H8 Lewis structure, we have to find out the C3H8 valence electrons first.We express valence electrons as dots in C3H8 Lewis dot structure.

To get the valence electrons of carbon,we need to look at the electronic configuration of carbon.

C(6)=1s²2s²2p²

The highest value of principal quantum number here is n=2.

The highest value of principal quantum number ,n , indicates the valence shell and we know the electrons in valence shell is called valence shell.

The nunber of valence electrons in carbon is 4.

Now,to draw the lewis dot structure of carbon,we need to imagine a square around carbon.

We know a square has four sides.At first,we have to place one valence electrons as dot to every side of that square before pairing up.

Again, we have to find out the valence electrons of hydrogen(H).

To get the valence electrons of hydrogen(H),we need to look at the electronic configuration of hydrogen (H).

H(1)=1s¹

The highest value of principal quantum number here is n=1.

The highest value of principal quantum number ,n , indicates the valence shell and we know the electrons in valence shell is called valence shell.

The nunber of valence electrons in hydrogen(H) is 1.

Step-2:C3H8 Valence Electrons

Now we have to count total number of C3H8 Valence electrons .

3×C = 4 ×3 =12

8 ×H= 8×1= 8

So,the total number of C3H8 valence electrons is twenty ( 12+ 8=20) .

These 20 valence electrons have two tasks at the the same time.They connect all the atoms and satisfy the duet rule of hygrogens and octet rule of three carbon atoms.

C3H8 Lewis structure Setup Step-3:

Now we have to determine the central atom in C3H8.The central atom is that kind of atom that is single or that has lower electronegativity.In case of C3H8,Carbon,C, is the central atom which has thred atoms and H is the outer atom.Hydrogen is always considered as outer atom

C3H8 Lewis structure Setup Step-4:

Now we need to connect the three central atoms using single bond or line(-) or two dots【●●).

Every line represent two 【●●】dots or two valence electrons.

In the above structure,we have used 4 valence electrons.So,we have 20 - 4 = 16 valence electrons left.

Now we need to connect the outer atoms with carbons.Remember that each carbon can form four bonds.So,the end two carbons will have three hydrogens and the middle carbon will have two hydrogen atoms.

So,to connect 8 hydrogen atoms ,we have used 16 valence electrons out of 16.Now we have (16 - 16 =0) zero valence electron left.

Look ,every carbon atom has 8 valence electrons here and every hydrogen atom has two valence electrons.

So, all carbons has satisfied their octet and eight hydrogens have satisfied their duet.This is the C3H8 (Propane) Lewis structure.

C3H8 Lewis Structure

Or,

C3H8 Lewis structure