1) Which element(s) below will give electrons to form an ionic bond? a) Na b) Cl c) O d) Xe e) K f) Ca 2) What happens to electrons in a covalent bond? a) They are transferred b) They are shared c) They are delocalised d) They disappear 3) How many electrons will calcium give away? a) 1 b) 6 c) 5 d) 2 e) 3 f) 4 4) What type of bonding is present in a molecule of magnesium chloride? a) Ionic b) Covalent c) Metallic 5) What holds the ions together in an ionic bond? a) Forces b) Electron static forces c) Electrostatic forces 6) How many electrons will sulfur receive in an ionic bond? a) 2 b) 1 c) 4 d) 5 e) 3 f) 6 7) How many bond pairs are there in an oxygen molecule? a) 1 b) 2 c) 3 8) Why is magnesium less reactive than calcium? a) Calcium has more protons b) Calcium has more electrons c) Calcium's electrons are further away from the nucleus d) Calcium's electrons are closer to the nucleus e) Calcium is bigger

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