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The s-Block Elements
Which of the following compounds has the lowest melting point?
As covalent character increases, melting point decreases, thus order of melting point isCaF2 > CaCl2 > CaBr2 > CaI2
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
CaOCl2, Calcium hypochlorite is the active ingredient in bleaching powder which releases chlorine.
On heating which of the following releases CO2 most easily?
Order of thermal stability is K2CO3 > Na2CO3 > CaCO3 > MgCO3Thus, MgCO3 releases CO2 most easilyMgCO3 + heat ---> MgO + CO2
What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV?
IE1 of Na = - Electron gain enthalpy of Na+ ion. = -5.1 eV.