16. Using the periodic table predict the formula of compound formed between an element X of group 12 and another element Y group 17.
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Answer:
The compound formed is XY₂.
Explanation:
Group 12 of the periodic table has the electron configuration (n-1)d¹⁰ns². The group 12 elements have 2 valence electrons. They tend to lose 2 electrons to obtain stability.
Group 17 of the periodic table has the electron configuration ns²np⁵. the group 17 elements have 7 electrons in the valence shell. Thus valency group 17 is 1. They accept 1 electron to attain a stable octet.
The element X of group 12 donates two electrons while the element Y of group 17 accepts one electron. So 2 Y atoms needed to form a bond with X. Hence the compound is XY₂.
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