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Two elements X and Y have atomic numbers...

Two elements X and Y have atomic numbers 12 and I 6 respectively. Write the electronic configuration for these elements. To which period of the modern periodic table do these two elements belong ? What type of bond will be formed between them and why ?

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(i)A-2,8,2
B-2,8,6
(ii) They belong to the third period as they have three shells. Period number of an element is equal to the number of shells in an atom.
(iii) They will form ionic bond as A is a metal and B is a non metal. A will lose two electrons which will be gained by B.
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OSWAL PUBLICATION-DIKSHA QUESTIONS -PERIODIC CLASSIFICATION OF ELEMENTS (LONG ANSWER)
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