Chemistry Chapter 5 Test sample questions

1. Chemistry Chapter 5 Test sample questions 1. Mendeleev left spaces in his periodic table and predicted the existence of three elements and their 2. Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing 3. Moseley's work led to the realization that elements with similar properties occurred at regular intervals when the elements were arranged in order of increasing 4. Evidence gathered since Mendeleev's time indicates that a better arrangement than atomic mass for elements in the periodic table is an arrangement by 5. The discovery of what elements added a new column to Mendeleev's periodic table?

2. 6. The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic • 7. Elements in a group or column in the periodic table can be expected to have similar • 8. The electron configuration of aluminum, atomic number 13, is [Ne] 3s2 3p1. Aluminum is in Period • 9. How many elements are in a period in which only the s and p sublevels are filled? • 10. The period of an element can be determined from its

3. 11. Elements to the right side of the periodic table (p-block elements) have properties most associated with • 12. Within the p-block elements, the elements at the top of the table, compared with those at the bottom,  • 13. For groups 13 through 18, the total number of electrons in the highest occupied level equals the group number • 14. Strontium's highest occupied energy level is 5s2. To what group does strontium belong? • 15. Nitrogen's electron configuration is 1s2 2s2 2p3. To what group does nitrogen belong?

4. 16. Magnesium, atomic number 12, has the electron configuration [Ne] 3s2. To what group does magnesium belong? • 17. The energy required to remove an electron from an atom is the atom's • 18. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound is called • 19. What is removed when the ionization energy is supplied to an atom of an element? • 20. A negative ion is known as a(n)

5. 21. In a row in the periodic table, as the atomic number increases, the atomic radius generally • 22. Within a group of elements, as the atomic number increases, the atomic radius • 23. As you move down Group 14 in the periodic table from carbon through lead, atomic radii • 24. The electrons available to be lost, gained, or shared when atoms form compounds are called • 25. The number of valence electrons in Group 1 elements is