| 1 |
Paramagnetic behaviour is caused by the presence of |
Unpaired electrons
Paired electrons
Paired protons
Paired electrons in an atom. molecule or ion
|
| 2 |
A transition element X has a configuration [Ar) 4s3dd in its +3 oxidation state. Its atomic number is |
25
26
22
19
|
| 3 |
The maximum oxidation state of Mn is |
+6
+7
+5
+4
|
| 4 |
All 3d series elements show an oxidation state of oxidation state |
+1
+2
+3
Zero
|
| 5 |
Which of the following shows group IIIB |
Zn, Cd. Hg
Cu. Ag. Au
Sc. Y. La
Ni. Pd. Pt
|
| 6 |
Group of element belongs to IIB group |
Zn. Cd. Hg
Cu. Ag. Au
Sc. Y. La
Ni. Pd. Pt
|
| 7 |
Stability of Cu-metal is due to filled of d-orbital |
Half
Completely
Partially
Quarterly
|
| 8 |
Group VIB of transition elements contains |
Zn. Cd. Hg
Cr. Mo, w
Fe. Ru, Os
Mn. Te. Re
|
| 9 |
The strength of binding energy of transition elements depends upon |
Number of electron pairs
Number of unpaired electrons
Number of neutrons
Number of protons
|
| 10 |
D-block elements are also called |
Non-typical transition element
Outer transition elements
Abnormal transition elements
Inner transition
|
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