Which element in 1A group does not form peroxides ?

 Which element in 1A group does not form peroxides ?
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 Lithium   
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Description : Which property among the following generally decreases from top to bottom in a group 1A ?

Last Answer : 1. Electropositive, Density, Basic nature, classical reactivity Electro affinity, electro negativity, Ionisational potential, melting and boiling points decreases from top to bottom in a group 1A from lithium to caesium

Which property among the following generally increases from top to bottom in a group 1A ?

Description : Which property among the following generally increases from top to bottom in a group 1A ?

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The following reaction is characteristic of what type of enzymes? 2H2O2 → 2H2O + O2 (A) Peroxides (B) Catalase (C) Dehydrogenase (D) Copper containing oxidases

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What is the family name given to the elements in group 1A of the periodic table?

Description : What is the family name given to the elements in group 1A of the periodic table?

Last Answer : ANSWER: ALKALI METALS

The elements in group 1A of the periodic table are called: w) halogens x) alkaline earths y) alkali metals z) rare earths

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Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by __________, which decompose to give free radicals. (A) Organic peroxides (B) Sulphuric acid (C) Hydrofluoric acid (D) None of these

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Last Answer : (A) Organic peroxides

Why is that on being heated in excess supply of air K,Rb and Cs forms superoxide’s instead of Oxides & peroxides?

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Ethers can be freed from peroxides by treatment with (a) Ferrous salt (b) Sodium carbonate (c) Ferric salt (d) Sodium bicarbonate

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Ethers are stored in brown bottles. This is because on exposure to air and light ethers are converted to (a) Peroxides (b) Oxonium ions (c) Ozonides (d) Electrophiles

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