1. Explain why magnesium oxide has a higher melting point than sodium chloride.

Question 1 of 22

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

Question 2 of 22

3. How many electrons in a magnesium atom?

Question 3 of 22

4. If iron oxide has the formula FeO, what is the formula of the iron ion?

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. 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 6 of 22

7. 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 7 of 22

8. What holds ions together?

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9. When are ions attracted to each other?

Question 9 of 22

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

Question 10 of 22

11. What is the formula of the strontium ion?

Question 11 of 22

12. Which group of atoms has a full outer shell?

Question 12 of 22

13. How many electrons in a sodium atom?

Question 13 of 22

14. What is needed to complete this diagram to show the ionic bonding in potassium oxide, K₂O ?

Question 14 of 22

15. What is the formula for sodium hydroxide?

Question 15 of 22

16. State the formula for the iron (II) ion

Question 16 of 22

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

Question 17 of 22

18. What is the formula for silver sulfate?

Question 18 of 22

19.

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

Question 19 of 22

20. What is needed to complete this diagram to show the ionic bonding in sodium chloride, NaCl ?

Question 20 of 22

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

Question 21 of 22

22. What is the formula of the aluminium ion?

Question 22 of 22