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(B) The element is likely to be calcium $(Ca)$.Calcium reacts with oxygen to form calcium oxide $(CaO)$,which is an ionic compound.Ionic compounds typ

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calcium

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(B) The element is likely to be calcium $(Ca)$.Calcium reacts with oxygen to form calcium oxide $(CaO)$,which is an ionic compound.Ionic compounds typically have high melting points due to strong electrostatic forces of attraction between ions.Calcium oxide $(CaO)$ reacts with water to form calcium hydroxide $(Ca(OH)_2)$,which is soluble in water.

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

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