Chemistry
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.
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 ⟶
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).