Question

a covalent compound has the formula sebr₂. complete the table to determine the number of atoms of each element in the compound (in one molecule). the table has columns: element (selenium, bromine) and number of atoms in compound (with yellow input boxes). in one molecule. what is the name of the covalent compound? (with two yellow dropdown menus for input).

Explanation:

Step1: Determine Selenium atoms

In the formula $SeBr_2$, the subscript for Se (Selenium) is 1 (implied if no subscript), so number of Selenium atoms is 1.

Step2: Determine Bromine atoms

In the formula $SeBr_2$, the subscript for Br (Bromine) is 2, so number of Bromine atoms is 2.

Step3: Name the covalent compound

For covalent compounds, use prefixes. Se is Selenium, Br is Bromine. Prefix for 1 (Se) is "mono-" (but often omitted for first element), prefix for 2 (Br) is "di-". So name is Selenium dibromide.

Answer:

• Selenium: 1
• Bromine: 2
• Compound name: Selenium dibromide