p-Block Elements
Oxidation states and trends in chemical reactivity of groups 13-17; anomalous properties of B, C, N, O, F; group-wise study of preparation, properties and uses of important compounds.
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Take a full mock →Q1 · p-Block Elements · HARD
Among the following oxoacids of phosphorus, how many have P–H bonds? H₃PO₂, H₃PO₃, H₃PO₄, H₄P₂O₇, H₄P₂O₅
Q2 · p-Block Elements · MEDIUM
Among the following, the number of species that are planar is: XeF₄, SF₄, BrF₅, ClF₃
Q3 · p-Block Elements · HARD
White phosphorus (3.1 g) is dissolved in boiling NaOH solution under inert atmosphere. The evolved gas is completely reacted with an acidified solution of CuSO₄. The number of moles of Cu₂SO₄ formed is: (Atomic mass: P = 31)
Q4 · p-Block Elements · HARD
A compound P₄ reacts with limited supply of oxygen at controlled temperature to form compound Q selectively. Q has a cage-like structure with each phosphorus atom bonded to three oxygen atoms. The total number of P–O–P linkages in one molecule of Q is: