Organize the following species in terms increasing lonization energy
F Cl Br
Na K Li
C N O F

Explanation:

F Cl Brionization energy decreases we move down the groupso Br<Cl<F

2. Na K Li

ionization energy decreases we move down the groupso K<Na<Li

3. C N O F

ionization energy increases as we move across the peroidso C<N<O<F

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There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.