1 mole of ${\mathrm{CH}}_4$ contains

 1 mole of ${\mathrm{CH}}_4$ contains     (1) 4 mole of hydrogen atom, i.e., 4 g atom of hydrogen.

                                                          (2) $4\times 6.023\times {10}^{23}$ atoms of ‘H’

                                                            (3) $6.023\times {10}^{23}$ molecules of  $C{H}_4$

                                                             (4) 12 gm of  Carbon

One mole of methane (CH₄​) contains important quantities of its constituent atoms and molecules, which are detailed as follows:

• Hydrogen Atoms: Methane has one carbon atom and four hydrogen atoms. Therefore, 1 mole of CH₄ includes 4 moles of hydrogen atoms. Since the molar mass of hydrogen is 1 g/mol, this corresponds to 4 g-atoms of hydrogen.
• Number of Hydrogen Atoms: Using Avogadro's number (6.023×10^23), 1 mole of CH₄​ contains 4×6.023×10^23 hydrogen atoms because there are four hydrogen atoms in each molecule of methane.
• Molecules of Methane: One mole of CH₄consists of 6.023×10^23 molecules. This value represents Avogadro's number, which defines the number of particles in one mole of a substance.
• Carbon Content: In CH₄​, the carbon atom has a molar mass of 12 g/mol. Therefore, 1 mole of methane contains 12 g of carbon.

These values highlight the composition of CH₄ in terms of atoms, molecules, and mass, helping understand its chemical structure quantitatively.