Question

What is wrong with the statement ‘l mole of hydrogen’?

Answer 1

• A mole is defined as the amount of a substance that contains exactly elementary entities of a given substance.
• One mole of hydrogen does not tell whether we have one mole of a hydrogen atom or 1 mole of hydrogen molecules.
• .We must always write whether hydrogen is in atomic form or molecular form.
• The correct statement is ‘1 mole of hydrogen atoms or one mole of hydrogen molecules.’