Question

calculate the no of orbital and maximum number of electron in the third shell ?
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Answer 1

Explanation:

There's space for 18e− in the 3rd shell: 3s+3p+3d=2+6+10=18, however, elements in the 3rd period only have up to 8 valence electrons. This is because the 3d-orbitals aren't filled until we get to elements from the 4th period - ie.

Answer 2

Answer:

the number of orbital maximum number of electrons present in third shell is 18