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Chemistry
Identify the transition element.
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Q. Identify the transition element.
AIIMS
AIIMS 2000
The d-and f-Block Elements
A
$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}, 4 s^{2}$
8%
B
$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{10}, 4 s^{2} 4 p^{\prime}$
13%
C
$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{10}, 4 s^{2} 4 p^{6}$
17%
D
$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{2}, 4 s^{2}$
61%
Solution:
Transition elements are those elements which posses partly filled $d$ -subshells in their elementary form or their commonly occurring ions i.e., $(n-1) d^{1-10} n s^{1-2}$.