Question

name the following binary compound composed of nonmetals: i4o9

Explanation:

When naming binary compounds composed of non - metals, we use prefixes to indicate the number of each atom. The prefix for 4 is "tetra -" and for 9 is "nona -". The first element is named as the element itself (iodine), and the second element (oxygen) has its ending changed to "-ide".

Answer:

Tetraiodine nonoxide