Which of the following statements is not true about covalent compounds?
1) They may exhibit isomerism
2) They have low melting and boiling points
3) They show ionic reactions
4) They have molecular reactions
I am confused between option 2 and 3. Please help.
Answers
Reason: Covalent compounds from covalent bonds as they share their electrons present in their outermost shell.
Hope it'll help.. :-)
Answer: Option (3) is the correct answer.
Explanation:
A covalent compound is the compound formed by sharing of electrons between the combining atoms.
For example, carbon has valency of 4 and oxygen atom has valency of 2. So, in order to attain stability two oxygen atoms will share their valence electrons with one carbon atom resulting in the formation of carbon dioxide compound.
Covalent compounds have weak bond as it is formed by sharing of electrons that can be easily broken down at low temperatures.
They also exhibit isomerism and also show molecular reactions.
Whereas ionic reactions are shown by only ionic compounds that is, compounds which are fromed by transfer of electrons between two atoms.
Hence, we can conclude that the statement which is not true about covalent compounds is that they show ionic reactions.