A) Co (Z = 27)
B) Ni (Z = 28)
C) Cu (Z = 29)
D) Fe (Z = 26)
Correct Answer: C
Solution :
In 3d-series melting point increases as we move from left to right. But \[Mn\]shows low melting point due to its complex formatting nature. It is unable to form metallic and covalent bonds.Element | Second ionisation enthalpy |
\[Ti\] | 1320 |
\[V\] | 1376 |
\[Cr\] | 1513 |
\[Mn\] | 1635 |
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