Please tell what is valency?? Why helium is a Nobel gas ?????Reply fast ....
Answers
Answered by
1
Answer:
they don't easily react with other elements.
they have full filled electronic configuration and obeying octet rule by duplet rule.
Answered by
3
Answer:
combining capacity of an element is known as valency.
Explanation:
example,
oxygen atomic number is 8
this means number of have oxygen is 8
when it arrange in shell 2,6 octect is not complete means last cell must have 8 electron so it will take some electron from other elements which is in number is 2 so it is the valency.
helmium is a noble because its octect is complete.so it is not combine with other.
oxygen ka valency kya hai use samjhane ke liye example diye hai.
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