The name of the compound $CH_{3}-CH_{2}-CHO$ is

How did ethanoic acid get its name as glacial acetic acid?

$A$ molecule of ammonia $(NH_3)$ has

Which of the following is the use of acetic acid?

An atom of an element contains six electrons in its valence shell. This element is the second major component of air. It exists as a diatomic molecule.
$(i)$ Identify the element.
$(ii)$ Show the bond formed between two atoms of this element.
$(iii)$ Write the nature of the bond between the two atoms.

What is the boiling point of acetic acid (in $;K$)?