The strongest base is
(1) Ce(OH)3
(3) Yb(OH)3
(2) Lu(OH)3
(4) Pm(OH)3
explain it
Answers
Explanation:
La(OH)3 isis more basic than Lu(OH)3. Due to lanthanoid contraction the size of lanthanoid ions decreases regularly with increase in atomic size .As a result of decrease in size,their covalent character between lanthanoid ion and OH ion increases from La3+to Lu3+. Therefore the basic character f hydroxides decreases from La(Oh)3 to Lu(OH)3
Answer:
The correct answer of this question is Lu(OH)3.
Explanation:
Given - Strongest base.
To Find - Write the strongest base.
In an aqueous solution, a strong base is one that is entirely dissociated. In water, these compounds ionise, yielding one or more hydroxide ions (OH-) per base molecule.
La(OH)3 has a higher basicity than Lu(OH). The size of lanthanoid ions reduces with increasing atomic size due to lanthanoid contraction. Their covalent nature between the lanthanoid ion and the OH ion rises from La3+ to Lu3+ as their size decreases. As a result, the hydroxide's basic character changes from La(Oh)3 to Lu(OH)3.
#SPJ2