Chemistry
Arrange the following as per the instruction given in the brackets.
(a) C, Pb, Sn, Ge, Si (increasing order of non-metallic character).
(b) Na, Al, Cl (increasing order of ionisation potential).
(c) Zn2+, Na+, Cu2+(order of preference of discharge at the cathode).
Related Questions
Concentrated nitric acid oxidises phosphorus to phosphoric acid according to the following equation:
P + 5HNO3 ⟶ H3PO4 + 5NO2 + H2O
(a) What mass of phosphoric acid can be prepared from 3.1 g of phosphorus?
(b) What mass of nitric acid will be consumed at the same time?
Identify the name of the salt on the basis of the following description.
(a) A salt prepared by the action of strong acid on metal.
(b) A nitrate which decomposes into its respective metal on heating.
Complete and balance the equations.
(a) SO2 + NaOH ⟶
(b) CuSO4 + NH4OH ⟶
The following questions refer to the periodic table:
(a) What are the elements of group 17 called?
(b) Name the most electronegative element of group 17.
(c) Name the weakest oxidising agent of group 17.