CSEC Chemistry · May/June 2013 · Paper 1 · Question Q14
Item 14 refers to the following information. Element | Atomic Number I | 3 II | 6 III | 17 IV | 18 Which TWO of the elements above when combined with each other form MAINLY ionic compounds?
- (A)I and II only
- (B)I and III only
- (C)II and IV only
- (D)III and IV only
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