Isotopes are written with the format "element name-atomic mass" how would you write the name of the isotope of oxygen with a mass of 17?

if two electrons have the same n, the same ℓ, and the same ml, then they are in the same orbital. the pauli exclusion principle states that no two identical fermions (a fancy word for electrons and other subatomic particles like electrons) may occupy the same quantum state in an atom simultaneously.

is there any options? maybe im just not seeing them but i need the options to

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c. electrical charges of ionic bonds.