IGCSE Chemistry 0620/21/O/N/21 Q23

Question

Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

23 Some properties of two metals, G and H, are shown.

metal G                                                      metal H
the formula of the chloride is GCl       high melting point
reacts with cold water                            has more than one oxidation state

Which row about metals G and H is correct?
metal G                                       metal H
A in Group I of the Periodic Table              in Group II of the Periodic Table
B in Group I of the Periodic Table              transition metal
C in Group II of the Periodic Table            in Group I of the Periodic Table
D in Group II of the Periodic Table            transition metal

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Answer ( 1 )

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    2022-05-11T22:43:56+08:00

    Chloride of metal G is GCl, means atom of metal G donated one electron to chlorine atom. Besides, if metal G can react in cold water means metal G has one of the highest reactivities among all metals.

    Hence, metal G is in Group I of periodic table.

     

    If a metal has more than one oxidation state, it is a transition metal.

     

    Ans: B

     

     

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