Question

an element X burn in air with a bright white light and form a white powder which is formed to be basic in nature element x on heating with water lybrate of liability colourless gas which one with a popping sound of on the basis of the above observation answer the following identify the element x

Answer 1

Hey Mate !!!

here is your answer !!!

X ------ burns with bright white light / flames !!

here is your reaction !!!

Mg + O2 =====∆ ====> MgO .


now ,
▶X react with water

===========================
MgO + H20 => Mg(OH)2 + H2 .



hence , the gas liberated is :- Hydrogen (H2) .

when HYDROGEN kept near flame , it burns with "POP" sound .




hence ,

X => Magnesium .

and gas liberated is hydrogen .


MgO is basic in nature .


because it is metal oxide .



hope it helps Dear !!

thanks

Answer 2

Element X is magnesium
Magnesium burns in air to give a white flame
Then, it forms a basic oxide
Magnesium reacts with hot water to give magnesium hydroxide