Why does hydrogen occur in a diatomic form rather than in a monoatomic form under normal conditions?

Name the compound each in which hydrogen exists in negative oxidation state

Classify the following as covalent, ionic or interstitial hydrides. 
CaH₂, LaH₂ RbH, GeH₂, TiH₂, NaH, NH₃

Why is hydrogen peroxide stored in wax lined bottles?

Why does hard water not form lather with soap?

Which gaseous compound on treatment with dihydrogen produces methanol?

Why is dihydrogen not preferred in balloons these days?

What type of elements forms interstitial hydrides?

Write the Lewis structure of hydrogen peroxide.

Find the volume strength of 1.6 N H₂ O₂ solution

10mL of a given solution of \({ H }_{ 2 }{ O }_{ 2 }\) contains 0.91 g of \({ H }_{ 2 }{ O }_{ 2 }\).Express its strength in volume.

What is the difference between the terms 'hydrolysis' and 'hydration'?

Calculate the concentration in g/L of a 20 volume H₂O₂ solution

Compare the structure of H₂O and H₂O₂.

Calculate the normality of a solution of 1 L of hydrogen peroxide labelled 30 volumes.

Sodium forms a crystalline ionic solid with dihydrogen. The solid is non-conducting in nature. It reacts violently with water to produce dihydrogen gas. Write the formula of this compound and its reaction with water. What will happen on electrolysis of the melt of this solid?

Rohan heard that instructions were given to the laboratory attendent  to store particular chemical, i.e. keep it in the dark room, add some urea in it, and keep it away from dust. This chemical acts as an oxidising as well as a reducing agent in both acidic and alkaline media.This chemical is important for use in the pollution control treatment of domestic and industrial effluents.
Explain why such precautions are taken for storing this chemical.

Why is hydrated barium peroxide used in the preparation of hydrogen peroxide instead of anhydrous barium peroxide?

Hydrogen peroxide acts both as an oxidising agent as well as a reducing agent in alkaline solution towards certain first row transition metal ions. Illustrate both these properties of \({ H }_{ 2 }{ O }_{ 2 }\) using chemical equations.

What do you expect the nature of hydrides is, if formed by elements of atomic numbers 15, 19, 23, 44 with dry dilhydrogen? Compare their behaviour towards water.

What mass of hydrogen peroxide will be present in 2L of a 5M solution?

Calculate the mass of oxygen which will be liberated by the decomposition of 200mL of this solution.