the combinded number of ? will determine the number of electrons in orbital around a neutral atom

To determine the number of electrons in the orbital around a neutral atom, you need to know the atomic number of the element. The atomic number represents the number of protons in the nucleus of an atom, which is equal to the number of electrons in a neutral atom.

The atomic number can be found on the periodic table of elements. Each element is assigned a unique atomic number, typically located above the chemical symbol for the element. For example, the atomic number of hydrogen (H) is 1, while the atomic number of carbon (C) is 6.

Therefore, the combined number of electrons in the orbital around a neutral atom is equal to the atomic number of that element.