Question

which metal burns in oxygen with dazzling white flame

Answer 1

The metal that's burns with dazzling white flame is the one and only magnesium element.

Answer 2

‘Magnesium’ burns in oxygen to produce MgO with dazzling white flame.

Explanation:

The metal is magnesium

Magnesium ribbon burns in air to form a black powder. It is known as Magnesium oxide.

$2 \mathrm{Mg}+\mathrm{O}_{2} \rightarrow 2 \mathrm{MgO}$

When Magnesium Oxide is dissolved in water, it will form a ‘basic solution’ called “Magnesium Hydroxide”. This will turn red litmus to blue.

$\mathrm{MgO}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{Mg}(\mathrm{OH})_{2}$

Magnesium is highly flammable material. That’s why it produces a dazzling sound when it is burned in air.