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Get Answers to all your Questions
An element X has a mass number 4 and atomic number 2. Write the valency of this element?
Answers (1)
Answer:
The element X has its atomic number as 2. Thus, an atom of X contains two electrons. Thus, the elements has only K shell containing 2 electrons i.e., a complete duplet
Hence, its valency = 0.
View full answer
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