The monohydrate changes into anhydrous salt at ______________K which on further heating decomposes to form  oxide.

MgSO₄ .7H₂O   → ____________ +6H₂O

_________ can be prepared  in the laboratory by passing  dry chlorine gas over heated  red phosphorus.

A typical  70kg  man  contains  about _________ of potassium.

  ___________ is  a vital element present in our body.

__________ is prepared by treating  phosphorus with thionyl chloride.

_______________  ions are the most abundant cations within cell fluids.

Sodium thiosulphate is colourless crystalline solid having _______________ molecules of water of crystallisation.

The viscosity of ____________ oils does not  change much with temperature.

______________ is extensively used as chlorinating agent in  organic chemistry.