1. On the Periodic Table what is the meaning of the word Period? What does that tell us about the electron configuration of the atom?

Question 1 of 22

2. State the formula for the iron (III) ion

Question 2 of 22

3. Balance the following equation: WO₃ + H₂ → W + H₂O

Question 3 of 22

4. How many electrons can the third shell hold?

Question 4 of 22

5. Explain, in terms of structure and bonding, why sodium chloride has a very high melting point

Question 5 of 22

6. What is special about the elements in group 0?

Question 6 of 22

7. What holds ions together?

Question 7 of 22

8. How can atoms get a full outer shell?

Question 8 of 22

9. State the formula for the lead (II) ion

Question 9 of 22

10. What is the formula for sodium hydroxide?

Question 10 of 22

11. When are ions attracted to each other?

Question 11 of 22

12. On the Periodic table what is the meaning of the word Group? What does that tell us about the electron configuration of the atom?

Question 12 of 22

13. What do each of the following state symbols represent: (s), (l), (g), (aq)

Question 13 of 22

14. How many electrons in a magnesium atom?

Question 14 of 22

15. State the electron configuration of the sulfide ion

Question 15 of 22

16. State the fomula for the two ions in vanadium (V) oxide

Question 16 of 22

17.

Explain, in terms of the arrangement of electrons in its atoms, why neon is very unreactive

Question 17 of 22

18. Why do elements in the same group of the periodic table have similar chemical properties?

Question 18 of 22

19. Describe the structure of an ionic compound, e.g NaCl

Question 19 of 22

20. What is the formula for sodium oxide?

Question 20 of 22

21. Explain, in terms of electrons, why isotopes have the same chemical properties

Question 21 of 22

22. What is the formula of the potassium ion?

Question 22 of 22


 

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