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The elements $_{30}Zn,_{48}Cd$ and $_{80}Hg$ belong to

$\begin{array}{1 1}\text{10th group}\\\text{11th group}\\\text{12th group}\\\text{13th group}\end{array} $

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Answer : 12th group
Atomic number 30=2+8+8+12.Thus,it belongs to 12th group.
answered Jul 25, 2014 by sreemathi.v

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