Question

is rust
1) sodium oxide. 2) iron oxide 3) copper oxide 4) silver oxide​

Answer 1

$\huge \mid{ \underline{ \overline{ \underline{\overline \pink{\bold{ \: \: Aɴsᴡᴇʀ \: \: } }}} }}\mid$

• iron oxide is rust.

Answer 2

$\huge \mathfrak \pink{Answer}$

Rust is Iron oxide.

option 2. is right.

it's formula is $Fe_{2}O_{3}.xH_{2}O$