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First read carefully then answer : According to spdf electronic configuration nickel should be stable but its valency is 2. Why? And if your answer is that to fill the octet it needs to lose 2 electrons then why zinc has valency 2 as it requires 4 electrons to fill his octet.

Posted by Toshit Pant 7 years, 8 months ago

CBSE > Class 10 > Science

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Posted by Pandey Ji 5 months, 3 weeks ago

CBSE > Class 10 > Science