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An element X occupies group 2 and period 4 reacts with element Y which occupies group...

An element X occupies group 2 and period 4 reacts with element Y which occupies group 17 and period 5. What is the compound produced as well as elements X and Y?

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Answer #1

The element X that occupies group 2 and period 4 of the periodic table is the Calcium (Ca) whose atomic number is 20. The electronic configuration of calcium is 1s22s22p63s23p64s2.or [Ar]184s2.

The element Y that occupies group 17 and period 5 of the periodic table is the Iodine(I) whose atomic number is 53. The electronic configuration of iodine is 1s22s22p63s23p63d104s24p64d105s25p5.or [Kr]36 4d105s2 5p5.

We must always remember that groups go horizontally and periods go vertically in the periodic table.

The compond produced between Ca and I will be calcium iodide (CaI2).

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