The hydride ion is iso-electronic with

Heavy water (D₂O) freezes at

Ortho and para hydrogens differ in the

Which of the following methods leads to the production of the highest purity of dihydrogen?

‘Syngas’ is a mixture of hydrogen with

The molarity of a 100 mL solution containing 5.1 g of hydrogen peroxide is

Which of the following compounds acts as a bleaching agent?

The O — O — H bond angle in H₂O₂ is