Sodium hydroxide is a compound itself, not a mixture of multiple compounds. It's made up of the elements sodium (Na), oxygen (O), and hydrogen (H) in the ratio of 1:1:1, forming the chemical formula NaOH.

Here's a breakdown of its components:

* Sodium (Na): A silvery-white, soft metal found in group 1 of the periodic table.

* Oxygen (O): A colorless, odorless gas found in group 16 of the periodic table.

* Hydrogen (H): A colorless, odorless gas found in group 1 of the periodic table.

These elements combine to form a strong base called sodium hydroxide, also known as lye or caustic soda.