Periodic Trends Gizmo Assessment Questions and Answers Already Passed

Periodic Trends Gizmo Assessment Questions and Answers Already Passed Which of the following list of elements is arranged from smallest to largest atomic radius? A. K, Ca, Sc B. K, Na, Li C. F, Cl, Br D. Ge, P, O Correct Answer: C. F, Cl, Br What is generally true of atoms with relatively large atomic radii? A. Large atoms hold their electrons very tightly. B. Large atoms tend to have a low ionization energy and a low electron affinity. C. Large atoms tend to be found on the right side of their period on the periodic table. D. Large atoms are usually found at the top of their group on the periodic table. Correct Answer: B. Large atoms tend to have a low ionization energy and a low electron affinity. What is the most accurate statement concerning ionization energy? A. Metals tend to have lower ionization energies than nonmetals. B. As you move down a group on the periodic table, ionization energy tends to increase. C. As you move across a period from left to right on the periodic table, ionization energy tends to increase. D. The noble gases tend to have the lowest ionization energies. Correct Answer: A. Metals tend to have lower ionization energies than nonmetals. Which factor would be most likely to shrink the size of an atom's electron cloud? A. Forming a positive ion. B. Removing a proton. C. Adding an energy level. D. Adding a valence electron to an existing energy level. Correct Answer: A. Forming a positive ion. Which of the following groups is characterized by both a high ionization energy and a low electron affinity? A. Alkali metals (group 1) B. Transition metals (groups 3-12) C. Halogens (group 17) D. Noble gases (group 18) Correct Answer: D. Noble gases (group 18)