Gaseous homogeneous mixture​

Gaseous homogenous mixture is air. It contains a number of gases. Its two main constituents are: oxygen (21%) and nitrogen (78%). The other gases are present in very small quantity.

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Explanation:

A homogeneous mixture is a solid, liquid, or gaseous mixture that has a uniform composition. No matter where you sample the mixture, the amount and type of components is the same. In contrast, a heterogeneous mixture lacks a uniform composition, so samples won't be identical.

output?

explanation:

the answer is na (sodium)