Ch 4

2. Ionization energy decreases down a group due to:

3. Elements in the same group have the same:

4. Which is a characteristic of non-metals?

5. Khalid is comparing the metallic character of elements. He knows that metallic character decreases across a period. Which element in the third period is the most metallic?

6. Sam is studying hydrogen halides. He knows that the thermal stability of hydrogen halides decreases down the group. Which hydrogen halide is the most thermally stable?

7. George is comparing the atomic size of chlorine and iodine. He knows that iodine is below chlorine in Group 17. Which element has the larger atomic size?

8. David is learning about the electronic configuration of elements. He knows that the electronic configuration of sodium is 2,8,1. How many valence electrons does sodium have?

9. Metals are generally found on which side of the periodic table?

10. Which property increases from left to right in a period?

11. Bilal is studying the electrical conductivity of elements. He knows that metals are good conductors, while non-metals are poor conductors. Which of the following is a non-metal that can conduct electricity?

12. Rachel is studying the reactivity of halogens. She knows that the halogens undergo displacement reactions. Chlorine can displace bromine from potassium bromide. Which halogen is the most reactive?

13. Quinn is studying the halogens, which are Group 17 elements. He knows that fluorine is a pale yellow gas and chlorine is a greenish-yellow gas. What is the appearance of bromine at room temperature?

14. Which property helps predict bonding behavior?

15. Emma is studying the group number and charge on ions. She knows that elements in Group 2 lose two electrons to form +2 ions. Which element is likely to form a +2 ion?

16. Which block contains transition metals?

17. Khalid is studying the metallic character of elements in Group 14. He knows that carbon is a non-metal, silicon is a metalloid, and tin and lead are metals. Which element is the most metallic in Group 14?

18. Waseem is learning about the position of an unknown element in the periodic table. He predicts that an element with atomic number 19 will be in which period and group?

19. Xia is studying the properties of noble gases. She knows that they are colorless and odorless gases. Which noble gas is used in advertising signs due to its ability to produce a distinctive color when electrified?

20. David is learning about electron configurations. He finds that an element has its last electron in the s orbital. He wants to know which block of the periodic table this element belongs to. What is the block called?

21. Which element has the highest electronegativity?

22. Which elements are good conductors of electricity?

23. Which of the following is a metalloid?

24. Which element has the largest atomic radius?

25. Electronegativity is the tendency of an atom to:

26. Zara is studying the density of halogens. She notes that the density of halogens increases down the group. At room temperature, chlorine is a gas, bromine is a liquid, and iodine is a solid. What is the state of fluorine at room temperature?

27. Ibrahim is studying the electron affinity of halogens. He knows that fluorine has a very negative electron affinity, while chlorine has an even more negative one. Which halogen has the most negative electron affinity?

28. Ahmed is comparing the boiling points of metals and non-metals. He knows that metals generally have high boiling points. Which of the following is a non-metal with a very low boiling point?

29. Periods in the periodic table represent:

30. Oliver is studying the thermal stability of hydrogen halides. He knows that HF is the most thermally stable. As we move down the group, the bond strength of H-X: