Question

an element reacts with oxygen to form an oxide which dissolves in water to form a solution that turns blue Litmus red oxide dissolve in NIOS to form salt and water the element is a sodium 20 Alpha se magnesium aluminium ​

Answer 1

$\huge\mathbb\red{HELLO!}$

because the only non metal present here it's sulphur...and the non-metal oxides are acidic in nature.

S+O2=SO2

SO2+H2O=H2SO3

H2SO3+2NaOH=Na2SO3+2H2O