Assuming that the octet rule is obeyed, write out the electron configuration for the ion formed by the element fluorine, F. This ion is a(n) Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Submit Answer with a charge of and has the same electron configuration as the noble gas Retry Entire Group 8 more group attempts remaining Previous Next

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Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.