Which is heaviest among the following
Which is heaviest among the following
- A
Iron
- B
Copper
- C
Gold
- D
Silver
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If the colours of salts of transition elements are due to the presence of unpaired electrons in the transition metal ions, which of the following ions will be colourless in aqueous solution
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$Cu(CN)_4^{2 - }$ is colourless as it absorbs light in
$Cu(CN)_4^{2 - }$ is colourless as it absorbs light in
The transition metals have a less tendency to form ions due to
The transition metals have a less tendency to form ions due to
Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$, $Mn = 25$, $Co = 27$, $Ni = 28$, $Cu = 29)$
Which of the following species is expected to show the highest magnetic moment? (At. Nos.: $Cr=24$, $Mn = 25$, $Co = 27$, $Ni = 28$, $Cu = 29)$
Ionisation enthalpies of $Ce,\,Pr$ and $Nd$ are higher than $Th,\,Pa$ and $U$. Why ?
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