What are the electron configurations of carbon, hydrogen, and oxygen atoms?

Carbon $\left(\mathrm{C}\right)$:

• The atomic number of Carbon is $6$.
• It belongs to Group $14$.
• The electronic configuration of Carbon $\left(\mathrm{C}\right)$ is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^2$.

Hydrogen $\left(\mathrm{H}\right)$:

• The atomic number of Hydrogen is $1$.
• The electronic configuration of Hydrogen $\left(\mathrm{H}\right)$ is $1{\mathrm{s}}^1$.

Oxygen $\left(\mathrm{O}\right)$:

• The atomic number of Oxygen is $8$.
• It belongs to Group $16$.
• The electronic configuration of Oxygen $\left(\mathrm{O}\right)$ is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^4$.