1
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Which of the following oxidation states is common for all lanthanides?
A
+2
B
+3
C
+4
D
+5
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition elements which shows highest magnetic moment?
A
$3 d^7$
B
$3 d^8$
C
$3 d^5$
D
$3 d^2$
3
KCET 2017
MCQ (Single Correct Answer)
+1
-0
Which of the following statement is wrong regarding lanthanoids?
A
$\operatorname{Ln}$ (III) compounds are predominantly ionic in character.
B
$\operatorname{Ln}$ (III) compounds are generally colourless.
C
$\operatorname{Ln}$ (III) hydroxides are mainly basic in nature.
D
The inoic size of $\operatorname{Ln}(I I I)$ ions decreases with increasing atomic number.
KCET Subjects
EXAM MAP