Which of the following species is paramagneti | vedclass

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(A) To determine if a species is paramagnetic,we check for the presence of unpaired electrons in its electronic configuration.$1$. $Fe^{2+}$ $(Z=26)$:

Vedclass · Accepted Answer

Only $Fe^{2+}$

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(A) To determine if a species is paramagnetic,we check for the presence of unpaired electrons in its electronic configuration.$1$. $Fe^{2+}$ $(Z=26)$: The configuration is $[Ar] 3d^6$. It has $4$ unpaired electrons,so it is paramagnetic.$2$. $Zn^0$ $(Z=30)$: The configuration is $[Ar] 3d^{10} 4s^2$. All electrons are paired,so it is diamagnetic.$3$. $Hg^{2+}$ $(Z=80)$: The configuration is $[Xe] 4f^{14} 5d^{10}$. All electrons are paired,so it is diamagnetic.$4$. $Ti^{4+}$ $(Z=22)$: The configuration is $[Ar] 3d^0$. There are no electrons in the $d$-orbital,so it is diamagnetic.Therefore,only $Fe^{2+}$ is paramagnetic.

Aspects	Metal
$a$. The metal which reveals a maximum number of oxidation states	$i$. Scandium
$b$. The metal although placed in $3d$ block is considered not as a transition element	$ii$. Copper
$c$. The metal which does not exhibit variable oxidation states	$iii$. Manganese
$d$. The metal which in $+1$ oxidation state in aqueous solution undergoes disproportionation	$iv$. Zinc

Which of the following species is paramagnetic? $Fe^{2+}, Zn^0, Hg^{2+}, Ti^{4+}$

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