Considering the elements Ca,Ge,Mg,Ga and K, the correct increasing order of their metallic character is:
A
Ca<Ge<Mg<Ga<K
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B
Ca<Ge<K<Mg<Ga
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C
Ge<Ga<Mg<Ca<K
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D
Ge<Ga<K<Ca<Mg
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Solution
The correct option is CGe<Ga<Mg<Ca<K Metallic character increases down the group and decreases along the period.
K being an alkali metal and having a configuration of np6ns1 will readily lose electron and attain noble gas configuration.
Ga and Ge being element of group 13 and group 14 respectively will have the least metallic character.