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TimestampScoreName of StudentSchool and City
Q1. Which of the following statements regarding allotropic forms of phosphorus is incorrect?
Q2. One mole of calcium phosphide on reaction with excess water gives
Q3.PH3, the hydride of phosphorus is
Q4. Basicity of orthophosphoric acid is
Q5. H3PO2 is the molecular formula of an acid of phosphorus. Its name and basicity respectively are
Q6. The structural formula of hypophosphorous acid is
Q7. Number of sigma bonds in P4O10 is
Q8. Oxidation states of P in H4P2O5 , H4P2O6 , and H4P2O7 ,are respectively
Q9. How many bridging oxygen atoms are present in P4O10?
Q10. What is hybridization of P in PCl5
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28/09/2020 14:58:029 / 10AgrimaCity international school
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineCovalent3
hypophosphorous acid and one
b16+ 3, + 4, + 56sp3d
3
28/09/2020 14:59:379 / 10AgrimaCity international school
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineCovalent3
hypophosphorous acid and one
a6+ 3, + 4, + 56sp3d
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11/10/2020 19:25:2510 / 10AgrimaCity international school
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineCovalent3
hypophosphorous acid and one
a16+ 3, + 4, + 56sp3d
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13/09/2021 19:32:478 / 10AVIRAL MISHRALucknow,CIS
Red phosphorus is polymeric in nature consisting of chains of P4 tetrahedral.
two moles of phosphineCovalent3
hypophosphorous acid and one
a16+ 3, + 4, + 52sp3d
6
14/09/2021 06:27:519 / 10Maitree SinghCIS
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineCovalent3
hypophosphorous acid and one
a16+ 3, + 4, + 52sp3d
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15/11/2021 18:44:519 / 10Arnava SrivastavaCIS lucknow
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineCovalent3
hypophosphorous acid and one
a16+ 3, + 4, + 54sp3d
8
13/12/2021 21:21:374 / 10SS
Black phosphorus has two forms D-black and E-black phosphorus
one mole of phosphineIonic3
hypophosphoric acid and two
a6+ 3, + 4, + 52sp3d
9
13/12/2021 21:25:589 / 10SS
Red phosphorus on heating catches fire and give dense red fumes of P4O10.
two moles of phosphineIonic3
hypophosphorous acid and one
a16+ 3, + 4, + 56sp3d
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