Question

How we can find the valency of 1 to 30 element

Answer 1

here is the answer for ur question...

Answer 2

• first we need to represent it in electronic configuration
• for example we take calcium
• its electronic configuration is 2,8,8,2
• so elements always try to attain like noble gas state
• so its nearest noble gas have configuration of 2,8,8
• so it need to lose two electrons to attain noble gas state
• this is how you find valency of an element

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