An element X has 2 electrons in its outermost M shell and Y has 5 electrons in its outermost L shell. What is the formula of the compound formed between X and Y?
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Answer:
X3y2 is formula of compound.
This is perfect answer.
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Given :
- Element X = 2 electrons [ M shell ]
- Element Y = 5 electrons [ L shell ]
[ No of electrons in it's outershell ]
Explanation :
- As per the given data , the electronic configuration of element X will be (2,8,2) [i.e. (K, L, M )] . The element will have the tendency to donate 2 electrons to become stable . Hence , it's valency it's 2 .
- The electronic configuration of element Y will be (2 , 5 ) . The element needs 3 electrons in order to complete it's octet so it will have the tendency to take electrons . Hence , it's valency will be -3 .
X Y
2 3
[ criss cross]
The compound formed is X ₃ Y₂.
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