A white solid X is a compound of alkali metal. A piece of red litmus paper turns white when it is dipped into a freshly made aqueous solution of the white solid. Identify the white solid X.

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Write the Lewis structure of O₂^- ion and find out oxidation state of each oxygen atom? What is the average oxidation state of oxygen in this ion?

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Explain why can alkali and alkaline earth metals not be obtained by chemical reduction methods?

2

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What happens when magnesium reacts with SO₂ gas ?

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When alkali metals dissolves in liquid ammonia, the solution can acquire different colours.Explain the reason for. this type of colour change.

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What happens when magnesium is burnt in air

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How would you explain BeO is almost insoluble but BeSO₄ is soluble in water.

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How would you explain BaO is soluble but BaSO₄ is insoluble in water.

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Name the compounds used for the manufacture of washing soda by Solvay process

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Which electrolyte is used to obtain sodium in Castner's process?

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Name the alkaline earth metals whose salt do not impart colour to a non-luminous flame.

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Arrange the following in the increasing order of solubility in water MgCl₂, CaCl₂,SrCI₂, BaCl₂

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What is the general name for elements of group 1?

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Which alkaline earth metals do not impart colour to the flame?

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What is soda ash?

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