Pentane has the molecular formula C5H12. It hasa)5 covalent bondsb)12 covalent bondsc)16 covalent bondsd)17 Covalent bondsCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

4 bonds of c-c bond

12bonds of c-H bonds

Answer

The total number of molecules and the number of carbon atoms is equal to the number of Covalent bonds.

For example , when we take Methane , it's molecular formula is CH4. So the covalent bonds is 4.

Pentane - Number of carbon atoms is 5.
Molecular formula for Pentane is 'C5H12'. So add the molecules of pentane = 5 + 12 = 16. So the covalent bond present in the 'Pentane' is 16.

Answer

Pentane has 16 covalent bonds all single..

Answer

Answer

Answer

Covalent Bonds in Pentane (C5H12)

Introduction:
Pentane is an organic compound with the molecular formula C5H12. It belongs to the alkane family, which consists of hydrocarbons with single covalent bonds. In order to determine the number of covalent bonds in pentane, we need to understand the structure and bonding of the molecule.

Structure of Pentane:
Pentane consists of a chain of five carbon atoms, each bonded to four hydrogen atoms. The carbon atoms are arranged in a straight line, and the hydrogen atoms are attached to the carbon atoms. This linear arrangement is known as a straight-chain or n-pentane.

Determining the Number of Covalent Bonds:
To calculate the number of covalent bonds in pentane, we need to consider the valence electrons of each element in the molecule.

Valence Electrons of Carbon:
Carbon is in Group 14 of the periodic table, and it has a valence of 4. This means that each carbon atom in pentane contributes 4 valence electrons.

Valence Electrons of Hydrogen:
Hydrogen is in Group 1 of the periodic table, and it has a valence of 1. This means that each hydrogen atom in pentane contributes 1 valence electron.

Calculating the Total Number of Valence Electrons:
To determine the total number of valence electrons in pentane, we multiply the number of carbon atoms by the valence electrons of carbon and the number of hydrogen atoms by the valence electrons of hydrogen:

Number of carbon atoms = 5
Number of hydrogen atoms = 12

Total valence electrons = (5 × 4) + (12 × 1) = 20 + 12 = 32

Calculating the Number of Covalent Bonds:
In a covalent bond, two electrons are shared between two atoms. Therefore, the number of covalent bonds can be determined by dividing the total number of valence electrons by 2:

Number of covalent bonds = Total valence electrons / 2 = 32 / 2 = 16

Conclusion:
Pentane (C5H12) has 16 covalent bonds. This can be determined by calculating the total number of valence electrons in the molecule and dividing it by 2. The linear arrangement of the carbon atoms and hydrogen atoms in pentane allows for the formation of multiple covalent bonds.

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