When metallic copper comes in contact with moisture, a green powder/pasty coating can be seen over it. This is chemically known as
Copper carbonate – Copper hydroxide
Zinc does not show variable valency like d-block elements because
Which of the following statements is not true in regard to transition elements?
The catalytic activity of the transition metals and their compounds is ascribed to their
Cuprous ion is colourless, while cupric ion is coloured because
Of the ions Zn2+, Ni2+ and Cr3+,
(atomic number of Zn = 30, Ni = 28, Cr = 24)
In which of the following metallic bond is strongest?
Which of the following ions has the highest magnetic moment?
Which of the following elements has the maximum first ionization potential?
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the statement is incorrect for this reaction?