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Question

The melting point of Zn is lower as compared to those of the other element of 3d series because:

A
The d-orbitals are completely filled
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B
The d-orbitals are partially filled
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C
Zn is a transition element
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D
all of these
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Solution

The correct option is A The d-orbitals are completely filled
In Zn1s22s23s23p63d104s2, the d-orbitals are completely filled i.e. absence of unpaired electrons in their atoms. Hence, the melting point is low.

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