1. _______ with the largest atoms and the smallest number of valence electrons and _______ with the smallest atoms and the greatest number of valence electrons are the most reactive.A. Nonmetals; metalsB. Transition elements; metalsC. Metals; nonmetalsD. Nonmetals; transition elements2. Which of the following is true regarding the inner transition elementsA. They occupy the d block of the periodic table.B. These include all elements in groups 3 12.C. These include the lanthanides and actinides and do not have f sublevels.D. Their valence electrons can be located in both s and f sublevels.3. When an atom of iron loses all of its 4s electrons and one of its 3d electrons what is its chargeA. 5+B. 3+C. 7+D. 524. When chromium loses two electrons its configuration changes toA. [Ar]4s13d5.B. [Ar]4s13d4.C. [Ar]3d4.D. [Ar]4s1.