Question

An element X on exposure to moist air turns greenish and a new compound Y is formed. The substance X and Y are​

Answer 1

Explanation:

$X \rightarrow copper(Cu) \\ 2Cu+O_2 \rightarrow 2CuO \\ Y \rightarrow copper \: oxide(CuO) \\ \\ \red{\mathfrak{\underline{\large{Hope \: It \: Helps \: You }}}} \\ \blue{\mathfrak{\underline{\large{Mark \: Me \: Brainliest}}}}$