Which has total of 18 electrons?
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Answer:
AN ION
Explanation:
An ion has 18 electrons in the outermost shell, it is Structure of Atom 4. The total number of electrons that can be accommodated in all the orbitals having principal quantum number 2 and azimuthal quantum number 1 are Structure of Atom 5. The ionisation of hydrogen atom would give rise to Hydrogen 6
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