Periodic Table. 1. In the modern Periodic Table, the elements are arranged in order of increasing. A. atomic number B. mass number

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1 Name: ate: 1. In the modern, the elements are arranged in order of increasing. atomic number. mass number. oxidation number. valence number 5. s the elements in Group I are considered in order of increasing atomic number, the atomic radius of each successive element increases. This is primarily due to an increase in the number of. neutrons in the nucleus. electrons in the outermost shell. unpaired electrons. principal energy levels 2. Which symbol represents an alkaline earth element?. Na. Mg. Ne. g 6. Which element in Group 17 (VII) is least likely to lose an electron?. chlorine. iodine 3. More than two-thirds of the elements are classified as. bromine. fluorine. nonmetals. metals. metalloids. noble gases 7. Which element in Period 2 has the greatest tendency to form a negative ion? 4. Which is the most active nonmetal in the Periodic Table of the Elements?. lithium. carbon. neon. fluorine. Na. F. I. l page 1

2 8. The arrangement of the elements in the present is based on atomic 12. If X represents an element of Group I, the formula of its oxide would be. mass. number. XO. X 2 O. XO 2. X 2 O 3. radius. density 13. erylium is classified as 9. The elements that have the most pronounced nonmetallic properties are located toward which corner of the?. upper right. upper left. an alkaline earth metal. an alkali metal. a transition metal. a noble gas. lower right. lower left 14. In which group do the elements usually form chlorides which have the general formula Ml 2? 10. n atom in the ground state contains three electrons in its outermost principal energy level. This is an atom of an element found in Group. I. II. VII. O. I. II. III. III 15. s the elements are considered from the top to the bottom of Group V, which sequence in properties occurs? 11. The alkaline earth metals are in Group. I. I. II. II. metal metalloid nonmetal. metal nonmetal metalloid. metalloid metal nonmetal. nonmetal metalloid metal page 2

3 16. In Period 2, as the elements are considered from left to right, there is a decrease in. ionization energy 20. Which is an alkaline earth metal?. Mg. Zn. Li. Pb. atomic mass. metallic character. nonmetallic character 21. Which of the following Group V elements has the most metallic properties?. i. P. Sb. N 17. More than two-thirds of the elements of the are. metalloids. metals. nonmetals. noble gases 22. The alkaline earth metals belong to which group?. I. II. I. II 18. Which element is a member of the halogen family?. K.. I. S 23. On the of the Elements, all the elements within Group VI have the same number of. valence electrons. energy levels. protons. neutrons 19. Which group contains elements with a total of four electrons in the outermost principal energy level?. I. O. VI. IV 24. Which compound contains an alkali metal and a halogen?. al 2. as. Rbl. Rb 2 S page 3

4 25. ased on the of the Elements, which Group II element is most active? 28. In the ground state, all atoms of Group 13 (III) of the have the same number of. Sr. Mg. a. a. nuclear particles. occupied principal energy levels. electrons. valence electrons 26. Which group in the contains the most active metals?. I. I. VII. VII 29. In which of the following periods of the Periodic Table are transition elements found? n atom of the element in Period 2 Group 14 (IV) is in the ground state. What total number of valence electrons does the atom have? 30. The alkaline earth metals are found in Group (I). 2 (II). 11 (I). 12 (II) page 4

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