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Thursday, October 8, 2020

What is structure of Beryllium chloride ?

Beryllium chloride a colorless crystal. it is deliquescent and soluble in water and ethanol. And its melting, boiling point are 405 °C ,520 °C respectively. Beryllium is a discrete molecule (BeCl2-dicoordinate) in gaseous state but in solid state it    forms a 1-dimensional chain (tetra-coordinated) beryllium via chlorine bridges bond. It is a as Lewis acid monomeric (BeCl2) form and is used as a catalyst for (FCR) Friedel-Crafts reactions.

Related Questions:

(1) What is structural feature of Beryllium halides ?

(2) Why both BeCO3 and BeSO4 are unstable to heat, while BaCO3 and BaSO4 are stable.Explain?

(3) What are the distinct structural features of sodium and potassium bicarbonates ?

(4) Why potassium carbonate cannot be prepared by Solvay process?

(5) Why are Group first elements called alkali metals?

(6) What is the most reactive alkali metal and why?

(7) The alkali metals have low densities. Explain. ?

(8) Write three general characteristics of the elements of s-block of the periodic table which distinguish them from the elements of the other blocks.

(9) Which alkali metal is most abundant in earth’s crust?

(10) Why is the density of potassium less than sodium?

(11) Why is lithium the strongest reducing agent in the periodic table?

(12) Name the metal which floats on water without any apparent reaction with it.

(13) Which is softer – Na or K and why?

(14) What makes sodium highly reactive?

(15) Why Li forms only oxides and not stable peroxide or superoxides ?

(16) Why LiCl is predominantly covalent while NaCl is ionic?

(17) Why alkali metals are normally kept in kerosene oil?

(18) Why Lithium is store in paraffin wax, not in kerosene oil unlike other alkali metals?

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