List of top Chemistry Questions on phosphorus

Consider the following reaction: \[ \text{Ca}_3\text{P}_2 \xrightarrow{\text{HCl}} \text{X} + \text{Y} \uparrow \] Which of the following is not correct regarding Y?

White phosphorus reacts with sulphuryl chloride and forms a solid substance A and a gas D. When A is heated at high temperature, it decomposes to give a colorless oily liquid 'X' and a gas C. The shape of X is:

Observe the following reaction \[ \mathrm{PH_3(g)} \xrightarrow{\text{Light}} X+\mathrm{H_2} \] \[ \mathrm{PH_3(g)} \xrightarrow{300^\circ\mathrm{C}} X+\mathrm{H_2} \] Which of the following is NOT correct regarding \(X\)?

In the reaction of phosphorus with conc. \(HNO_3\), the oxidized and reduced products respectively are

Which statement is false for white phosphorus (\(P_4\))?

The oxyacid of phosphorus that contains one \(P-OH\), two \(P-H\) and one \(P=O\) bonds is

Which one of the following has the maximum number of P–OH bonds?

Which of the following phosphorus is the most reactive?

Select incorrect statements.
(A) Ionisation energies of 5d-elements are greater than those of 3d and 4d elements.
(B) Cu(I) is diamagnetic while Cu(II) is paramagnetic.
(C) [Ti(H\(_2\)O)\(_6\)]\(^{3+}\) is colored while [Sc(H\(_2\)O)\(_6\)]\(^+\) is colourless.
(D) Transition elements cannot form complexes.

Strong reducing behaviour of \( \text{H}_3 \text{PO}_4 \) is due to

Concentrated nitric acid (\( \text{HNO}_3 \)) oxidizes phosphorus to:

The number of photo electrons emitted for light of a frequency $\upsilon$ (higher than the threshold frequency $v_0) $ is proportional to