Question

napthalene balls disappear if kept in air for a few weeks​

Answer 1

It disappeares because Sublimation takes place which is directly Changing of solid into gaseous state !!

Answer 2

$\huge\mathbb{HOLA}$

$\huge\bold{Answer}$

● Because of $\bold{Sublimation}$

● $\bold{Sublimation}$ is change from $\bold{Solid}$ to $\bold{gas}$

● When naphthalene balls are exposed to air they change from solid to gas and disappear

$\huge\mathfrak{Thank-You}$