Question

The tripositive ion of an element M has two shells.
(i) What is the atomic number of M?
iI) Give the chemical formulae of the following compounds of M
a) chlorate
b) Manganate​

Answer 1

2.(a) Magnesium chloride = MgCl2

(b) Calcium oxide = CaO

(c) Copper nitrate = Cu(NO3)2

(d) Aluminium chloride = AlCl3

(e) Calcium carbonate = CaCO3

3.Chlorate is a decomposition product of chlorine dioxide (along with chlorite), and levels can approach 20% of the original chlorine dioxide dose. In the US EPA's ICR, which represents the most extensive data for chlorate, the median level of chlorate was 0.12 mg l−1 at plants using chlorine dioxide for disinfection.

4.a salt in which the anion contains both manganese and oxygen, especially one of the anion MnO42−.

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