Advertisements
Advertisements
Question
Match the statements given in Column I with the oxidation states given in Column II.
Column I | Column II | |
(i) | Oxidation state of Mn in MnO2 is | (a) + 2 |
(ii) | Most stable oxidation state of Mn is | (b) + 3 |
(iii) | Most stable oxidation state of | (c) + 4 |
Mn in oxides is | (d) + 5 | |
(iv) | Characteristic oxidation state of lanthanoids is | (e) + 7 |
Solution
Column I | Column II | |
(i) | Oxidation state of Mn in MnO2 is | (c) + 4 |
(ii) | Most stable oxidation state of Mn is | (a) + 2 |
(iii) | Most stable oxidation state of Mn in oxides is | (e) + 7 |
(iv) | Characteristic oxidation state of lanthanoids is | (b) + 3 |
APPEARS IN
RELATED QUESTIONS
Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state.
Write the electronic configurations of the elements with the atomic numbers 61, 91, 101 and 109.
The f-block elements are known as ____________.
Match the compounds/elements given in Column I with uses given in Column II.
Column I (Compound/element) | Column II (Use) | |
(i) | Lanthanoid oxide | (a) Production of iron alloy |
(ii) | Lanthanoid | (b) Television screen |
(iii) | Misch metal | (c) Petroleum cracking |
(iv) | Magnesium based alloy is constituent of | (d) Lanthanoid metal + iron |
(v) | Mixed oxides of lanthanoids are employed | (e) Bullets |
(f) In X-ray screen |
On the basis of Lanthanoid contraction, explain the following:
Trends in acidic character of lanthanoid oxides.
Which of the following pairs has the same ionic size?
In lanthanoid the last electron enters (n - 2)f subshell where n is equal to ______.
Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of _______.
Which one of the lanthanoids given below is the most stable in divalent form?
Write a note on lanthanoids.