1
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
lanthanoids are
A
14 elements in the sixth period (atomic no. 90 to 103) that are filling 4f sublevel
B
14 elements in the seventh period (atomic number = 90 to 103) that are filling 5f sublevel
C
14 elements in the sixth period (atomic number = 58 to 71) that are filling the 4f sublevel
D
14 elements in the seventh period (atomic number = 50 to 71) that are filling 4f sublevel.
2
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Among the following series of transition metal ions, the one where all metal ions have 3d2 electronic configuration is
[At. Nos. Ti = 22, V = 23, Cr = 24, Mn = 25]
A
Ti3+, V2+, Cr3+, Mn4+
B
Ti+, V4+, Cr6+, Mn7+
C
Ti4+, V3+, Cr2+, Mn3+
D
Ti2+, V3+, Cr4+, Mn5+
3
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
The radioactive isotope $${}_{27}^{60}$$Co which is used in the treatment of cancer can be made by (n.p) reaction. For this reaction the tarfet nucleus is
A
$$_{28}^{59}$$ Ni
B
$$_{27}^{59}$$ Co
C
$$_{28}^{60}$$ Ni
D
$$_{27}^{60}$$ Co
4
AIPMT 2004
MCQ (Single Correct Answer)
+4
-1
Considering H2O as a weak field ligand, the number of unpaired electrons in [Mn(H2O)6]2+ will be (atomic number of Mn = 25)
A
three
B
five
C
two
D
four
EXAM MAP