Question

What is the rule that we need to follow while writing a covalent compound?

• A. Prefix for first element and end with -ide
• B. Prefix for second element and end with -ide
• C. Prefix for both elements and end with -ide
• D. None of the choices

Answer 1

The correct option is A

Prefix for first element and end with -ide

In covalent compound all are non-metals and hence the following rules should be applied:

*use prefixes in front of the names if needed, and suffix of or ending with -ide"
*Never use the prefix mono for the first element"

Use prefixes of di = 2, tri = 3, tetra = 4, Penta = 5 etc. in front of the second element.

$C{O}_2$ as Carbon di Oxide