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Out of Ca2+, Al3+, N3-,F- which has the same no. of electrons in its outermost shell and penultimate shell?
Among the following, N3- and F- have same no. of electrons in the outermost shell (nth shell) and penultimate shell [(n-1)th shell]They both have an electronic configration of 1s22s22p6.
Ca2+=18e-and Al3+,N3-,F-=10 e-,all 4 have same 8 electrons in valence shell and Al3+,N3-,F- have same 2 electrons in penultimate shell.
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