Advertisements
Advertisements
Question
Account for the following:
In case of transition elements, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number.
Advertisements
Solution
In case of transition elements, ions of the same charge in a given series show progressive decrease in radius with increasing atomic number. As the new electron enters a d orbital each time the nuclear charge increases by unity. The shielding effect of a d electron is not that effective, hence the net electrostatic attraction between the nuclear charge and the outermost electron increases and the ionic radius decreases.
APPEARS IN
RELATED QUESTIONS
Account for the following:
Cu+2 salts are coloured, while Zn2+ salts are white.
The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition element, which shows highest magnetic moment.
Why does copper not replace hydrogen from acids?
Answer the following question:
Which element of the first transition series has highest second ionisation enthalpy?
Identify the metal and justify your answer.
\[\ce{MO3F}\]
Mention any three processes where transition metals act as catalysts.
The element with atomic number 53 belongs to
Which of the following ions will exhibit colour in aqueous solution?
Give a reason for the following:
Zinc, cadmium and mercury are considered as d-block elements but not regarded as transition elements.
Give a reason for the following:
Transition metals possess a great tendency to form complex compounds.
