Q3 of 53 Page 72

A metal M has electronic configuration 2, 8, 3 and occurs in earth's crust and its oxide M203. It is more reactive than zinc. Which of the following options (s) is/are correct?

The element with atomic number of 13 [2 + 8 + 3 = 13] is Aluminium and it is more reactive than zinc.


The ore of aluminium is called as bauxite and the oxide of aluminium is Al2O3.


So the correct answer is d.

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1

In each test tubes A, B, C and D, 2mL of solution of Al2(SO4), in water was filled. Clean pieces of zinc were placed in test tube A, clean iron nail was put in test tube B, silver (Ag) was placed in test tube C and a clean copper wire was placed in test tube D.

Which of the following option (s) is/are correct about above experiment?

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On the basis of the sequence of the given reactions identify the most and least reactive elements:

X+ YA → XA + Y ...(i)


X + YB → XB + Y ...(ii)


Z + XA → ZA + X

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