Al2se3 Compound Name

The compound Al2Se3 is composed of two atoms of aluminum (Al) and three atoms of selenium (Se).

To name this compound, we first need to determine the charges of each element. Aluminum is a metal from Group 3A of the periodic table, which means it has a charge of +3. Selenium is a non-metal from Group 6A, which means it has a charge of -2.

The charges of the two elements are not equal, so we need to use subscripts to balance the charges. We write the symbol for aluminum first, followed by the symbol for selenium and a subscript of 3 to indicate that there are three atoms of selenium, since the charge of one selenium atom (-2) is balanced by the charge of two aluminum atoms (+3 x 2 = +6).

Therefore, the compound Al2Se3 is named aluminum selenide.