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The number of allowed orbitals in a shell is given by:
An halved
Bn doubled
Cn squared
Dn cubed
Answer & Solution
Correct answer: C. n squared
1. As n increases, the number of orbitals grows quickly.
2. The number of allowed orbitals is given by n squared.
3. So the correct answer is n squared.
_Source: syllabus Chemistry, Ch 2 'Structure of Atom'_
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