Question

Name the elements which form only covalent compounds

Answer 1

Carbon and silicon form covalent compouds

Answer 2

Some elements which have high ionisation power cannot send electrons and low  affinity elements cannot take these electrons.

Explanation:

• So they share their electrons with  other elements or atoms in other elements to achieve octet configuration. This also  achieves stability. Such bond sharing with same or different bonds is called covalent  bonding.
• Covalent bonds are broadly classified into three different categories namely : Polar  covalent, Non-polar covalent and Co-ordinate covalent bonds.
• Carbon-monoxide and Methane are two prime examples which contains only  covalent bonds.

To learn more:

1. The impact of biochemistry bioavailability and bioactivity on the selection of bioremediation techniques:

https://brainly.in/question/4760455  

2. Use of mutant strains has been of increased in industrial microbiology:

https://brainly.in/question/3451258