Question

fill in the blank question
the number that is assigned by the quantum mechanical model to indicate the relative sizes and energies of atomic orbitals is the
number.

Explanation:

In quantum mechanics, the principal quantum number (denoted as \( n \)) is used to indicate the relative sizes and energies of atomic orbitals. As \( n \) increases, the orbital size increases and the energy level of the electron in that orbital also generally increases.

Answer:

principal