Chemistry · S and p Block Elements
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A metal reacts vigorously with cold water melting in to a ball of molten metal moves across the surface of water giving of Hydrogen gas and burns wni yellowish golden flame. What could be the identity of this metal?
- A
Potassium
- B
Sodium
- C
Lithium
- D
Calcium
Sodium is known to react vigorously with water, producing hydrogen gas and a characteristic yellowish-golden flame.
That's incorrect option. Potassium don't produce yellow flame on heating but it reacts vigorously with water .
That's correct option.
That's incorrect option. Lithium reacts less vigorously than other alkali metals with water.
That's incorrect option. Calcium reacts less vigorously with water than alkali metals and doesn't produce yellow flame on heating.
Tagged under Chemistry · S and p Block Elements · 2023