How to derive the element with its symbol and valency?

1.	How to derive the element with its symbol and valency?
Answer» Explanation: Basically there is no way by which you can derive an ELEMENT from a SYMBOL. The symbols are usually learned. And for valency, it can tell the group NUMBER but not the EXACT element.

Answer»

Explanation:

Basically there is no way by which you can derive an ELEMENT from a SYMBOL. The symbols are usually learned.

And for valency, it can tell the group NUMBER but not the EXACT element.

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