P Block Elements
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Which one of the following is used to remove most of plutonium from spent nuclear fuel?
Which one of the following is used to remove most of plutonium from spent nuclear fuel?
O2F2 oxidises plutonium to PuF6 and the reaction is used in removing plutonium as PuF6 from spent nuclear fuel.
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Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803K?
Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803K?
When red phosphorus is heated in a sealed tube at 803 K, a - black phosphorus is formed.
Upvote The oxide that given H2O2 most readily on treatment with H2O is:
The oxide that given H2O2 most readily on treatment with H2O is:
(1)
(2)
(3) PbO2 + 2H2O ->Pb (OH)4
(4) SnO2 + 2H2O ->Sn (OH)4
Upvote In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
In which one of the following molecules strongest back donation of an electron pair from halide to boron is expected?
Type of back bonding:-
Therefore order of back bonding strength =>
BF3 > BCl3 > BBr3 > Bl3
Upvote The metal ion (in gaseous state) with lowest spin-only magnetic moment value is
The metal ion (in gaseous state) with lowest spin-only magnetic moment value is
the lowest spin only magnetic moment for Ni+2 because of minimum unpaired electron.
Upvote AB3 is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is________. (Integer answer)
AB3 is an interhalogen T-shaped molecule. The number of lone pairs of electrons on A is________. (Integer answer)
For AB3 interhalogen compound, which is T-shaped, only two lone pair electrons are available on central atom.
Upvote Reactivity order of halogens and inter halogens are F2 > ClF > Cl2 and ClF forms HOCl and HF after the reaction with water.
Upvote The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl5 is:
The number of non-ionisable hydrogen atoms present in the final product obtained from the hydrolysis of PCl5 is:
All hydrogens are attached to oxygen are ionisable.
Upvote When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to
When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to
Cobalt (II) meta borate is a blue colour of Bead.
Upvote Portland cement contains ‘X’ to enhance the setting time. What is ‘X’?
Portland cement contains ‘X’ to enhance the setting time. What is ‘X’?
Here 'X' is the Gypsum (CaSO4.2H2O) which is used to enhance the setting of time.
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