Chemistry
An element Y has 2 electrons in the 2nd orbit and X has 7 electrons in its 3rd orbit. The compound formed between them has the formula:
- XY2
- YX2
- YX
- Y7X2
Atomic Structure
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Answer
YX2
Reason — As element Y has 2 electrons in its 2nd orbit, so the electronic configuration of Y is [2, 2] and X has 7 electrons in the third orbit so its electronic configuration is [2, 8, 7]
Y donates it two valence electrons and completes its octet and two atoms of X accept the electrons to attain the octet, hence the compound formed is YX2.
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