In which of the following, NH₃ is not used?

Which is true regarding nitrogen?

An element belongs to group 15 and 3^rd period of the periodic table, its electronic configuration would be_______.

S-S bond is present in _______.

Pick the wrong one among the following

What are interhalogen compounds? Give examples.

Give the uses of helium.

How is nitrogen prepared from liquid air?

What is phosphoresencer?

What is the reaction of Phosphorous with alkali?

Write the molecular formula and structural formula for the following molecules.
a) Nitric acid
b) Dinitrogen pentoxide
c) phosphoric acid (PTA)
d) phosphine

Write the valence shell electronic configuration of group-15 elements.

Discuss the anomalous nature of fluorine.

Write the order of thermal stability of the hydrides of group 16 elements.

Out of H₂O and H₂S which one has higher bond angle and why?

Complete the following reactions.
\(1. \mathrm{NaCl}+\mathrm{MnO}_{2}+\mathrm{4H}_{2} \mathrm{SO}_{4} \longrightarrow \)
\(2. \mathrm{NaNO}_{2}+\mathrm{HCl} \longrightarrow \)
\(3.\mathrm{P}_{4}+\mathrm{3NaOH}+\mathrm{3H}_{2} \mathrm{O} \longrightarrow \)
\(4. \mathrm{AgNO}_{3}+\mathrm{PH}_{3} \longrightarrow \)
\(5. \mathrm{Mg}+\mathrm{10HNO}_{3} \longrightarrow \)
\(6. \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} \)
\(7. \mathrm{Cu}+Con. \ Hot \ \mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow\)
\(8. \mathrm{Sb}+\mathrm{Cl}_2 \longrightarrow \)
\(9. \mathrm{HBr}+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow \)
\(10. \mathrm{XeF}_6+\mathrm{H}_2 \mathrm{O} \longrightarrow \)
\(11. \mathrm{XeO}_6{ }^{4-}+\mathrm{Mn}^{2+}+\mathrm{H}^{+} \longrightarrow \)
\(12. \mathrm{XeOF}_4+\mathrm{SiO}_2 \longrightarrow \)
\(13. \mathrm{Xe}+\mathrm{F}_2 \frac{\mathrm{Ni} / 200 \mathrm{~atm}}{400^{\circ} \mathrm{C}}\).

Give a detailed account on allotropes of sulphur.

How does sulphuric acid react with metals at various conditions.