Question

4. how many covalent bonds are present in the molecule of ethane?

Answer 1

There are 7 covalent bonds

Answer 2

$\huge\mathfrak\red{Answer :}$

Ethane Formula => $C_{2}H_{6}$

In modified form :- $H_{3}C---CH_{3}$

It's clear be seeing that C - C atoms are joined together by a single bond... And one 2C atoms are joined with H by 3 bonds...

Number of Bond between 2C = 1

Number of Bond between C and H = 6

Total number of bonds present in ethane = 1 + 6 = 7

======================================