It has 7 covalent bonds as .1 bond is between two carbon atoms and rest of the six are with hydrogen atoms.

There is 6 bonds between carbon and hydrogen and single bond between 2 carbons. So, it has total 7 covalent bonds.
Ans:(b) 7 covalent bonds

Ethane is a hydrocarbon compound with the molecular formula C2H6. It consists of two carbon atoms and six hydrogen atoms.

Explanation:
Each carbon atom in ethane is sp3 hybridized and forms four single covalent bonds with other atoms. Each hydrogen atom forms a single covalent bond with a carbon atom. Therefore, the total number of covalent bonds in ethane is:

- 2 carbon-carbon bonds
- 6 carbon-hydrogen bonds

Adding these two numbers gives us a total of 8 covalent bonds in ethane. However, we need to account for the fact that each covalent bond involves two electrons. Therefore, the total number of electrons involved in covalent bonding in ethane is:

- 2 carbon-carbon bonds x 2 electrons/bond = 4 electrons
- 6 carbon-hydrogen bonds x 2 electrons/bond = 12 electrons

Adding these two numbers gives us a total of 16 electrons involved in covalent bonding in ethane. However, we also need to consider the lone pairs of electrons on each atom. Each carbon atom has two lone pairs of electrons, and each hydrogen atom has one lone pair of electrons. Therefore, the total number of electrons involved in bonding and lone pairs in ethane is:

- 2 carbon atoms x 2 lone pairs/atom = 4 lone pairs
- 6 hydrogen atoms x 1 lone pair/atom = 6 lone pairs
- Total = 16 + 4 + 6 = 26 electrons

Since each covalent bond involves two electrons, we can calculate the total number of covalent bonds as:

- Total electrons/2 = 26 electrons/2 = 13 covalent bonds

Therefore, the correct answer is option B, which states that ethane has 7 covalent bonds.