Q. The amalgam of the metal is used in filling teeth

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Q. Alkali metals are extremely reactive and

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Q. In the chemical reaction 2Ca + O₂ →, products are

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Q. The purity of gold is expressed in

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Q. This alloy is used as coolant in nuclear reactors

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Q. The specific gravity of Calcium is

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Q. Calcium is used as

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Q. The minerals of sodium is

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Q. The density, atomic volume, atomic and ionic radii from Li to Cs

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Q. The metal which easily lose electron and form cations is

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Q. The element with the highest electronegativity is

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Q. Example of noble metal is

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Q. Rock salt has the chemical formula

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Q. The ability of an element to accept electrons and form positive ions is called

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Q. Chlorine reacts with calcium hydroxide to form

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Q. The metal which is used for making jewellery

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Q. Halogens belong to group

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Q. The catalyst used by chlorine to decompose water is

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Q. The word "alkali" means

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Q. Solubility of halogens in water down the group

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